{"title":"Batteries","description":"\u003cp\u003ePower that goes with you. Browse rechargeable and primary cells — \u003cstrong\u003e18650 Li-ion, LiPo packs, coin cells\u003c\/strong\u003e — and the holders and connectors to mount them safely in portable and off-grid projects.\u003c\/p\u003e\u003cp\u003eGenuine cells with reliable capacity, in stock and ready to ship fast across India with Cash on Delivery and a GST invoice. Pair with a charger or protection board from our Power \u0026amp; Regulators range.\u003c\/p\u003e","products":[{"product_id":"5kg-load-cell-weight-sensor-5kg-capacity-strain-gauge","title":"5KG Load Cell Weight Sensor - 5kg Capacity Strain Gauge","description":"\u003ch1\u003e5KG Load Cell - Weight Sensor (5kg Strain Gauge)\u003c\/h1\u003e\n\n\u003cp\u003eThe 5KG Load Cell is a precision strain gauge sensor designed for measuring weight up to 5 kilograms. Commonly used in electronic kitchen scales, this load cell converts mechanical force into an electrical signal, providing accurate and repeatable measurements. Its compact design and high sensitivity make it suitable for DIY weighing projects and industrial applications.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated Output\u003c\/td\u003e\n\u003ctd\u003e1.0 ± 0.15 mV\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eExcitation Voltage\u003c\/td\u003e\n\u003ctd\u003e5–10 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (LxWxH)\u003c\/td\u003e\n\u003ctd\u003e55 x 12 x 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\"\u003eElectronic kitchen weighing scale with digital display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eDIY luggage scale for travel\u003c\/li\u003e\n  \u003cli\u003eForce measurement system for lab experiments\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/automatic-pet-feeder-kit-ai-object-detection-and-4-dof-servo-arm\"\u003eAutomatic pet feeder with weight monitoring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with microcontrollers like Arduino, ESP32, and Raspberry Pi when paired with an HX711 amplifier module. The load cell outputs a low-voltage differential signal that requires amplification; popular HX711 breakout boards handle signal conditioning and provide digital output. Compatible with standard 5V logic levels.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the load cell's four wires (red, black, white, green) to the HX711 module following its pinout: red to E+, black to E-, white to A-, green to A+. Use a 5V excitation voltage and avoid exceeding the maximum rated load to prevent permanent deformation.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works seamlessly with Arduino when used with an HX711 load cell amplifier module. Many Arduino libraries are available for easy integration.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the accuracy of this load cell?\u003c\/summary\u003e\u003cp\u003eIt has a typical rated output of 1.0 mV\/V with linearity around ±0.05% of full scale, providing precise measurements for most weighing applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it come with mounting hardware?\u003c\/summary\u003e\u003cp\u003eThe load cell includes threaded holes on both ends for easy mounting. Bolts and mounting plates are not included; you may need M4 screws for installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444958093677,"sku":"CDN-0313","price":150.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_d700056a-002a-4d46-8124-f4ddca13aa1e.jpg?v=1781512437"},{"product_id":"1kg-load-cell-precision-weight-sensor-for-kitchen-scales-compoden","title":"1KG Load Cell - Precision Weight Sensor for Kitchen Scales | Compoden","description":"\u003ch1\u003e1KG Load Cell - Weight Sensor for Electronic kitchen Weighing Scale\u003c\/h1\u003e\n\n\u003cp\u003eThis 1kg load cell is a resistive strain gauge sensor designed for precise weight measurement in electronic scales and DIY projects. It converts applied force into a measurable electrical signal, making it ideal for building digital kitchen scales, small parts counters, or force measurement tools. With a compact form factor and high linearity, it integrates easily with common microcontrollers using an HX711 amplifier module.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated Output\u003c\/td\u003e\n\u003ctd\u003e1.0 ±0.15 mV\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBridge Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ± 50 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eExcitation Voltage\u003c\/td\u003e\n\u003ctd\u003e5–10 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNon-linearity\u003c\/td\u003e\n\u003ctd\u003e≤ 0.05% F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDigital kitchen scale with LCD readout\u003c\/li\u003e\n  \u003cli\u003eSmall parts counter for inventory management\u003c\/li\u003e\n  \u003cli\u003eForce-sensitive trigger or presence detector\u003c\/li\u003e\n  \u003cli\u003eDIY coffee dosing scale for espresso\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any microcontroller or single-board computer that can read analog signals, such as Arduino Uno, ESP32, or Raspberry Pi. For best results, pair it with an HX711 load cell amplifier module, which provides 24-bit ADC resolution and simplifies reading the wheatstone bridge. Operates at 5V logic, compatible with 3.3V systems if using level shifting for the data line.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eTypical wire color code: red (Excitation+), black (Excitation-), green (Signal+), white (Signal-). Connect to HX711: E+ to red, E- to black, A+ to green, A- to white. Always verify polarity with datasheet before powering. Avoid exceeding maximum excitation voltage to prevent damage.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, this load cell works with Arduino when used with an HX711 amplifier module. The HX711 library enables easy calibration and weight reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow accurate is this sensor?\u003c\/summary\u003e\u003cp\u003eIt offers up to 0.05% non-linearity, meaning less than 0.5g deviation at full load. Repeatability is typically within ±0.1% for consistent measurements.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it include mounting hardware?\u003c\/summary\u003e\u003cp\u003eThe sensor has two threaded holes for M4 screws; hardware is not included. Mount it between two plates with one side fixed to measure applied force.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444958159213,"sku":"CDN-0314","price":140.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_2b5a9748-6bc7-432e-8521-e73cc2d5d811.jpg?v=1781512440"},{"product_id":"10kg-load-cell-weight-sensor-precision-up-to-10kg","title":"10kg Load Cell Weight Sensor – Precision up to 10kg","description":"\u003ch1\u003e10KG Load Cell Weight Sensor – 10kg Capacity for Precision Weighing\u003c\/h1\u003e\u003cp\u003eThe 10KG load cell weight sensor is a strain gauge-based transducer designed to measure weight or force up to 10 kilograms. Commonly used in digital scales and industrial automation, it converts mechanical force into a low-level electrical signal. With high accuracy and a durable construction, it's a go-to choice for prototyping and production weighing systems.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e10kg (approx. 22 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e1.0 ± 0.1 mV\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExcitation Voltage\u003c\/td\u003e\n\u003ctd\u003e5–10V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e350 ± 5 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e80mm x 12.7mm x 12.7mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e350mm, 4-wire (red\/black\/white\/green)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\"\u003eArduino-powered digital kitchen scale with LCD display\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eIndustrial weight monitoring system for conveyor belts\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/automated-pet-feeder-kit\"\u003eAutomated pet feeder with portion control\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eDIY luggage scale for travel or logistics\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe sensor outputs a differential voltage and requires an external ADC like the HX711 module. It works with any microcontroller that can read digital data, such as Arduino Uno, Nano, ESP32, or Raspberry Pi with an HX711 breakout. Input voltage is typically 5V from the microcontroller’s pin. Direct connection to analog pins is not recommended due to noise.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect the load cell’s red wire to E+, black to E-, white to A-, and green to A+ on the HX711 module. Then interface the HX711’s DT and SCK pins to your microcontroller’s digital I\/O. Use a stable 5V supply and keep wires short to minimize interference.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works seamlessly with Arduino boards when used with an HX711 amplifier module. Many libraries (e.g., HX711_ADC) simplify calibration and reading.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow accurate is this 10kg load cell?\u003c\/summary\u003e\u003cp\u003eIt offers a typical combined error of ±0.03% full scale, equivalent to about ±3 grams. Proper calibration and stable mounting yield reliable results.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDo I need an amplifier?\u003c\/summary\u003e\u003cp\u003eAbsolutely. The output signal is only a few millivolts, so you must use an HX711 or similar high-precision ADC board to convert it to digital readings.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445018059117,"sku":"CDN-0723","price":130.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_5ca84e4c-ed57-4246-888a-00876be65076.jpg?v=1781512853"},{"product_id":"ds3231-real-time-clock-module-i2c-rtc-with-battery-backup","title":"DS3231 Real-Time Clock Module - I2C RTC with Battery Backup","description":"\u003ch1\u003eDS3231 Real-Time Clock Module (RTC) – Accurate I2C RTC with Battery Backup\u003c\/h1\u003e\u003cp\u003eThe DS3231 is a precision real-time clock module designed for microcontrollers like Arduino and Raspberry Pi. It keeps accurate time even when the main device is powered off, thanks to a built-in temperature-compensated crystal oscillator (TCXO) and a coin cell battery backup. Ideal for data logging, timers, and any project requiring reliable timekeeping.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChip\u003c\/td\u003e\n\u003ctd\u003eDS3231\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (address 0x68)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V to 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Backup\u003c\/td\u003e\n\u003ctd\u003eCR2032 (battery not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±2ppm (~1 minute\/year)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e~25mm x 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arduino-digital-clock-kit-build-your-own-real-time-clock-with-ds3231-rtc\"\u003eDigital clock display on an LCD or OLED screen\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-soil-sensor-data-logger\"\u003eData logger with timestamp for sensor readings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-automated-irrigation-system\"\u003eAutomated timer for home appliances or irrigation systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eScheduling events in IoT projects or alarms\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any microcontroller that supports I2C, including Arduino Uno, Mega, Nano, Raspberry Pi, ESP32, and STM32. Operates at both 3.3V and 5V logic levels, making it easy to interface with a wide range of boards.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect SDA to your board's SDA pin (A4 on Arduino Uno), SCL to SCL (A5), VCC to 5V (or 3.3V) and GND to GND. The module includes pull-up resistors, so no external ones are needed. Insert a CR2032 battery in the holder for backup timekeeping when main power is off.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the DS3231 works seamlessly with Arduino Uno using the Wire library. Just connect the four pins and use an RTC library like RTClib.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it include the battery?\u003c\/summary\u003e\u003cp\u003eThe module includes a battery holder but the CR2032 coin cell battery is sold separately to comply with shipping regulations.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the accuracy of the clock?\u003c\/summary\u003e\u003cp\u003eThe DS3231 has an accuracy of ±2ppm, which translates to about ±1 minute per year, thanks to its temperature-compensated crystal oscillator.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445038637421,"sku":"CDN-0840","price":180.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e34cc77b-0a2d-4d3b-bff0-58485b48bb9d.jpg?v=1781513018"},{"product_id":"aa-batteries-15v-alkaline-reliable-power-for-projects","title":"AA Batteries 1.5V Alkaline - Reliable Power for Projects","description":"\u003ch1\u003eAA Batteries 1.5V Alkaline – Reliable Power for DIY Electronics\u003c\/h1\u003e\u003cp\u003eAA batteries are standard 1.5V alkaline cells used in countless electronic devices, from TV remotes to robotic kits. They provide consistent power for DIY projects, toys, clocks, and portable electronics. This pack from Compoden ensures you always have fresh, long-lasting power on hand, with a shelf life of up to 5 years.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e1.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eAlkaline (Zinc-Manganese Dioxide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Capacity\u003c\/td\u003e\n\u003ctd\u003e2000 - 3000 mAh (at low drain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e14.5 mm diameter × 50.5 mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf Life\u003c\/td\u003e\n\u003ctd\u003eUp to 5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-18°C to 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBuild a portable pocket fan using a DC motor and AA battery holder.\u003c\/li\u003e\n\u003cli\u003eCreate a simple LED flashlight with a switch and resistor.\u003c\/li\u003e\n\u003cli\u003ePower a DIY wireless doorbell circuit.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arduino-digital-clock-kit-build-your-own-real-time-clock-with-ds3231-rtc\"\u003eUse as backup power for a digital clock or remote sensor.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThese AA batteries fit any standard AA battery holder or device requiring AA cells, such as toys, flashlights, remote controls, and wireless mice. They deliver 1.5V per cell; multiple cells can be arranged in series to achieve higher voltages (e.g., 4 cells for 6V) or in parallel for increased capacity. Always match the voltage requirements of your project. These versatile cells are the most common battery size worldwide.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eWhen wiring into a battery holder, observe correct polarity: the flat end is negative (-) and the raised end is positive (+). If soldering directly, avoid excessive heat as it can damage the cell. For projects, use a holder with wire leads for easy connection to breadboards or terminals.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, you can power an Arduino using AA batteries. For a 5V Arduino, three AA cells in series provide 4.5V, which works on the VIN pin. For 3.3V boards, two cells provide 3V. A boost converter can also be used for stable 5V.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow long do these batteries last in a typical project?\u003c\/summary\u003e\u003cp\u003eBattery life depends on the current draw. With a typical capacity of 2000mAh, a device drawing 100mA will run for about 20 hours. For low-drain devices like remotes, they can last months.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these batteries rechargeable?\u003c\/summary\u003e\u003cp\u003eNo, these are standard single-use alkaline batteries. Do not attempt to recharge them as it may cause leakage or rupture. For rechargeable options, look for NiMH AA batteries.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445061869933,"sku":"CDN-0888","price":180.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e5169c7c-fc86-42fb-bd77-f397fa20b937.jpg?v=1781513114"},{"product_id":"9v-battery-reliable-power-for-electronics-projects","title":"9V Battery – Reliable Power for Electronics Projects","description":"\u003ch1\u003e9V Battery – Standard Alkaline Power for Everyday Electronics\u003c\/h1\u003e\u003cp\u003eThe 9V battery (PP3 form factor) is an essential power source for a wide range of electronics. It provides a stable 9 volts DC, making it ideal for portable devices, testing equipment, and compact projects. Whether you're powering an Arduino, a multimeter, or a DIY amplifier, this battery delivers consistent performance.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e9V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eAlkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Capacity\u003c\/td\u003e\n\u003ctd\u003e550–600 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e48.5 mm x 26.5 mm x 17.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~45 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eSnap connector (male\/female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable Arduino projects like environmental sensors or LED displays\u003c\/li\u003e\n\u003cli\u003ePower a digital multimeter for on-the-go measurements\u003c\/li\u003e\n\u003cli\u003eWireless alarm systems with 9V-operated sensors\u003c\/li\u003e\n\u003cli\u003eGuitar effect pedals and audio circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis 9V battery works with any device that accepts a PP3 snap connector. It is commonly used with Arduino boards via the Vin pin, ESP32 modules with 9V input, and development boards that have a 9V barrel jack or terminal. It also pairs perfectly with standard 9V battery clips for breadboard prototyping.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eUse a 9V battery snap connector with red (+) and black (-) wires. For Arduino, connect the positive red wire to Vin and the black wire to GND. Ensure your circuit does not draw more than 100–150 mA continuously to avoid voltage sag. If using with sensitive electronics, consider adding a capacitor across the terminals to reduce noise.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, you can power an Arduino Uno by connecting the 9V battery to the Vin pin and GND. The onboard regulator will step down to 5V. Do not draw more than 150 mA total from the 5V pin when using a 9V battery.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow long does a 9V battery last in typical projects?\u003c\/summary\u003e\u003cp\u003eFor a low-power circuit drawing 10 mA, expect around 50–60 hours. Higher current loads will reduce runtime proportionally. For reference, an Arduino Uno with minimal components uses about 50 mA, giving roughly 10–12 hours of operation.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use a rechargeable 9V battery instead?\u003c\/summary\u003e\u003cp\u003eYes, rechargeable 9V batteries (NiMH or Li-ion) work in most devices, but note they have slightly lower voltage (7.2V or 8.4V nominal) and may not suit circuits requiring a stable 9V under load. This listing is for a standard alkaline battery.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445081170285,"sku":"CDN-0938","price":60.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_1e25f0ce-a971-45ce-8422-91ca55fcaebc.jpg?v=1781513191"},{"product_id":"50kg-load-cell-weighing-sensor-high-precision-weight-sensor","title":"50Kg Load Cell Weighing Sensor – High Precision Weight Sensor","description":"\u003ch1\u003e50Kg Load Cell Weighing Sensor\u003c\/h1\u003e\n\u003cp\u003eThe 50Kg load cell weighing sensor is a precision strain gauge transducer that converts mechanical force into an electrical signal. It is commonly used in digital scales, process control, and force measurement applications. With a capacity up to 50kg and high linearity, it provides reliable readings for both hobbyist and industrial projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated Load\u003c\/td\u003e\n\u003ctd\u003e50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Sensitivity\u003c\/td\u003e\n\u003ctd\u003e1.0 ± 0.15 mV\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNon-linearity\u003c\/td\u003e\n\u003ctd\u003e≤ 0.05% F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eExcitation Voltage\u003c\/td\u003e\n\u003ctd\u003e5 – 15 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e34 mm x 34 mm (mounting hole spacing 25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\"\u003eDigital kitchen or postal scale with an HX711 and Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eIndustrial conveyor belt weighing system\u003c\/li\u003e\n  \u003cli\u003eIoT smart scale using ESP32 and cloud logging\u003c\/li\u003e\n  \u003cli\u003ePortable luggage or shipping scale with battery operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any microcontroller that has an analog input, provided you use a suitable amplifier. It is commonly paired with the HX711 load cell amplifier module for Arduino, ESP32, and Raspberry Pi Pico. The differential output signal is in the millivolt range and requires amplification before reading.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eTypical wire colors: red (E+), black (E-), green (A+), white (A-). Connect to an HX711 board accordingly. Limit excitation voltage to 15V DC; current consumption is negligible. Keep wiring short and away from high-frequency noise sources.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, when used with an HX711 load cell amplifier module, this sensor interfaces easily with Arduino. Simply connect the load cell wires to the HX711 and use the HX711 library for Arduino.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum weight it can measure safely?\u003c\/summary\u003e\u003cp\u003eThe sensor is rated for 50 kg, but can withstand up to 75 kg (150% overload) briefly. For accurate and repeatable measurements, stay within the rated load.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it come with an HX711 module?\u003c\/summary\u003e\u003cp\u003eNo, this listing includes only the load cell. You will need to purchase an HX711 amplifier board separately, which is available in our store.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445103681901,"sku":"CDN-0355","price":45.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/5182_9675afc5-3eb4-413f-b282-0cbda40ff216.jpg?v=1781522250"},{"product_id":"20kg-load-cell-weighing-sensor-wired-strain-gauge-module","title":"20KG Load Cell Weighing Sensor – Wired Strain Gauge Module","description":"\u003ch1\u003e20KG Load Cell Weighing Sensor\u003c\/h1\u003e\n\u003cp\u003eA resistive strain gauge load cell rated for up to 20 kg of compression. This straight bar sensor outputs a differential voltage proportional to applied load, making it the go‑to choice for building digital weighing scales, test rigs, and force-triggered automation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated capacity\u003c\/td\u003e\n\u003ctd\u003e20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput sensitivity\u003c\/td\u003e\n\u003ctd\u003e1.0 ±0.15 mV\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ±10 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ±10 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended excitation\u003c\/td\u003e\n\u003ctd\u003e5–10 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInsulation resistance\u003c\/td\u003e\n\u003ctd\u003e≥2000 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\"\u003eDigital kitchen or postal scale with an HX711 ADC and Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e20 kg capacity industrial parts-counting scale\u003c\/li\u003e\n  \u003cli\u003eForce-sensitive occupancy detection for shelving or inventory bins\u003c\/li\u003e\n  \u003cli\u003eReal-time grip-strength measurement tool for physiotherapy studies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003ePairs directly with the HX711 24-bit ADC module, which handles excitation and signal conditioning. Works with any 5 V logic microcontroller – Arduino Uno, Nano, Mega, ESP32, Raspberry Pi Pico, and STM32 boards. Single-point mounting suits surface plates up to 20 kg.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eRed wire is excitation+ (E+), black is excitation- (E‑), white is signal+ (S+), and green is signal- (S‑). Use the HX711 breakout board’s E+\/E‑\/A+\/A‑ channels; keep wires twisted and away from switching noise sources for stable readings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We’ve spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works with any Arduino board when paired with an HX711 amplifier module. The amplified digital signal is read via a two‑wire interface (data and clock).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need an amplifier to use this load cell?\u003c\/summary\u003e\u003cp\u003eAbsolutely. The raw output is only a few millivolts, so an HX711 or similar instrumentation amplifier is required to boost the signal to a readable range for microcontrollers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum load before damage?\u003c\/summary\u003e\u003cp\u003eThe sensor’s safe overload limit is 150% of rated capacity (30 kg). Exceeding this may permanently deform the metal spring element and ruin accuracy.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445127635309,"sku":"CDN-0722","price":180.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e572b098-c7a1-4d11-8b98-9a44f358fe89.jpg?v=1781513458"},{"product_id":"18650-2-cell-battery-holder-for-diy-electronics-arduino-projects","title":"18650 2-Cell Battery Holder for DIY Electronics \u0026 Arduino Projects","description":"\u003ch1\u003e18650 2-Cell Battery Holder - 7.4V Series Output\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThis 2-cell 18650 battery holder connects two 3.7V lithium-ion cells in series, delivering a nominal 7.4V output ideal for powering Arduino, ESP32, and Raspberry Pi projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBattery Compatibility\u003c\/td\u003e\n\u003ctd\u003e2 × 18650 (not included)\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eConfirmed\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eSeries (2S)\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eConfirmed\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e7.4V (8.4V fully charged)\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eTypical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Current\u003c\/td\u003e\n\u003ctd\u003eUp to 2A (cell‑dependent)\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eEstimated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eJST PH2.0 male plug, 15cm wire\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eTypical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eABS plastic\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eTypical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e~77 × 38 × 20 mm\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eEstimated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~20 g\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"confidence\"\u003eEstimated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-ev-charging-station-power-monitor\"\u003e\n\u003cstrong\u003eArduino Weather Station:\u003c\/strong\u003e Power an outdoor sensor node with a 7.4V Li‑ion pack and solar charging circuit.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESP32 Wi‑Fi Repeater:\u003c\/strong\u003e Build a portable network extender running directly from the holder’s regulated 5V output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaspberry Pi Handheld Console:\u003c\/strong\u003e Use a step‑down converter to safely power a Pi Zero gaming handheld.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE Class 12 Physics Project:\u003c\/strong\u003e Demonstrate series voltage addition with two 18650 cells in a hands‑on practical.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB.Tech Smart‑Cart Final Year Project:\u003c\/strong\u003e Supply a mobile robot’s motor driver and microcontroller with a compact 7.4V source.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVin, GND\u003c\/td\u003e\n\u003ctd\u003eOnboard regulator accepts 7‑12V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVin, GND\u003c\/td\u003e\n\u003ctd\u003eSame as Uno\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVin, GND\u003c\/td\u003e\n\u003ctd\u003eSame as Uno\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVin, GND\u003c\/td\u003e\n\u003ctd\u003eVin accepts 5‑12V (LDO regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVin, GND\u003c\/td\u003e\n\u003ctd\u003eVin accepts 5‑12V (AMS1117 reg.)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes, with buck converter\u003c\/td\u003e\n\u003ctd\u003eVSYS (5V), GND\u003c\/td\u003e\n\u003ctd\u003eStep‑down to 5V required\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes, with buck converter\u003c\/td\u003e\n\u003ctd\u003e5V GPIO pin, GND\u003c\/td\u003e\n\u003ctd\u003eStable 5V supply needed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the red wire (positive) to a board’s Vin or a regulator input, and the black wire (negative) to GND. Always insert cells with correct polarity as marked on the holder. For 3.3V or 5V systems, use a buck converter to step down the voltage to the required level.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I use two different 18650 cells in this holder?\u003c\/h3\u003e\n    \u003cp\u003eUsing mismatched cells (capacity, age, brand) is not recommended; it can cause uneven charging\/discharging and potential damage.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eWhat is the maximum current this holder can safely deliver?\u003c\/h3\u003e\n    \u003cp\u003eThe holder’s contacts can handle up to 2A continuous, but actual current depends on the installed 18650 cells.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/18650-2-cell-battery-holder-for-diy-electronics-arduino-projects#product\",\n      \"name\": \"18650 2-Cell Battery Holder - 7.4V Series Output\",\n      \"description\": \"18650 2-cell battery holder with 7.4V series output for Arduino projects. Price ₹65, free delivery in India. Ideal for DIY. Shop at Compoden.\",\n      \"sku\": \"CDN-0956\",\n      \"mpn\": \"CDN-0956\",\n      \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n      \"offers\": {\n        \"@type\": \"Offer\",\n        \"priceCurrency\": \"INR\",\n        \"price\": \"PRICE_PLACEHOLDER\",\n        \"availability\": \"https:\/\/schema.org\/InStock\",\n        \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\", \"url\": \"https:\/\/compoden.in\"}\n      }\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"@id\": \"https:\/\/compoden.in\/products\/18650-2-cell-battery-holder-for-diy-electronics-arduino-projects#faq\",\n      \"mainEntity\": [\n        {\"@type\": \"Question\", \"name\": \"Can I use two different 18650 cells in this holder?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Using mismatched cells (capacity, age, brand) is not recommended; it can cause uneven charging\/discharging and potential damage.\"}},\n        {\"@type\": \"Question\", \"name\": \"What is the maximum current this holder can safely deliver?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The holder’s contacts can handle up to 2A continuous, but actual current depends on the installed 18650 cells.\"}}\n      ]\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53454857044333,"sku":"CDN-0956","price":75.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/p_63bb07e9-8ec1-4b24-81f7-1ffc7034cfe5.png?v=1782230046"},{"product_id":"aa-battery-15v-alkaline-cell-for-electronics-diy-projects","title":"AA Battery 1.5V Alkaline Cell for Electronics \u0026 DIY Projects","description":"\u003ch1\u003eAA 1.5V Alkaline Battery for Electronics \u0026amp; DIY Projects\u003c\/h1\u003e\n\u003cp class=\"product-lede\"\u003eThis high-quality AA 1.5V alkaline battery provides reliable power for Arduino, ESP32, and Raspberry Pi electronics projects, ensuring stable 1.5V output for prototyping, robotics, and educational kits.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e1.5V (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eAlkaline (Zinc-Manganese Dioxide)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Capacity\u003c\/td\u003e\n\u003ctd\u003e2500 mAh (at 25mA discharge)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShelf Life\u003c\/td\u003e\n\u003ctd\u003e5 years (up to 80% capacity)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e14.5 mm (±0.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e50.5 mm (±0.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e23 g (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eCompoden\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino LED Blinker:\u003c\/strong\u003e Use a 4xAA battery holder to power an Arduino Uno and learn basic digital I\/O with a blinking LED.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESP32 BLE Beacon:\u003c\/strong\u003e Build a low‑energy Bluetooth beacon with an ESP32, a single AA battery, and a boost converter module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaspberry Pi RTC Backup:\u003c\/strong\u003e Keep a Raspberry Pi 4 real‑time clock running during power loss with a single AA cell connected to the RTC module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE Class 12 Physics:\u003c\/strong\u003e Construct series and parallel battery configurations to measure combined voltage and current for practical lab work.\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-lora-sensor-node-kit-transmit-1km-without-wifi\"\u003e\n\u003cstrong\u003eSmart IoT Sensor Node:\u003c\/strong\u003e Design a battery‑powered environmental sensor using an ESP32 in deep sleep, LoRa radio, and one AA battery for a B.Tech final year project.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003e4xAA pack or boost converter to 5V pin \/ Vin\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003e4xAA pack or boost converter to 5V pin\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003e4xAA pack or boost converter to 5V pin\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eBoost converter to 3.3V or 5V pin\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eBoost converter to 5V pin; or 2xAA in series to 3.3V pin (with caution)\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eBoost converter to VSYS (1.8–5.5V)\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eBoost converter to 5V GPIO or USB‑C power input\u003c\/td\u003e\n\u003ctd\u003eN\/A (power only)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the positive terminal (raised nub) to your circuit’s VCC via a battery holder or snap connector, and the negative (flat end) to GND. Never short‑circuit the cell; always use a switch to disconnect when not in use. For voltages higher than 1.5V, wire multiple AA cells in series—four cells produce 6V suitable for Arduino Uno barrels.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I power an Arduino Uno directly with one AA battery?\u003c\/h3\u003e\n    \u003cp\u003eNo, a single AA provides only 1.5V while the Uno’s voltage regulator needs at least 7V on Vin or 5V on the USB port. Use at least four batteries in series or a boost converter module.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eHow long will this battery last in a low‑power IoT project?\u003c\/h3\u003e\n    \u003cp\u003eRuntime depends on average current draw; a typical ESP32 weather station sleeping 99% of the time can last 3–6 weeks on a single AA cell.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/aa-battery-15v-alkaline-cell-for-electronics-diy-projects#product\",\n      \"name\": \"AA 1.5V Alkaline Battery for Electronics \u0026 DIY Projects\",\n      \"description\": \"AA 1.5V alkaline battery for Arduino, ESP32, Raspberry Pi projects. Ideal for DIY electronics, robotics, education kits. From Compoden India. 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