{"product_id":"dual-18650-battery-shield-v8-for-arduino-esp32esp8266-5v33v-output","title":"Dual 18650 Battery Shield V8 for Arduino, ESP32\/ESP8266 – 5V\/3.3V Output","description":"\u003ch1\u003eDual 18650 Battery Shield V8 Module – 5V\/3.3V Output for Arduino and ESP32\u003c\/h1\u003e\n\n\u003cp\u003eThe 2 x 18650 Battery Shield V8 is a portable power solution designed to run Arduino, ESP32, ESP8266, and other 5V\/3.3V microcontroller boards from two 18650 rechargeable lithium-ion batteries. It integrates a boost converter, charging circuit, and protection features on a single compact PCB. Ideal for field deployments, robotics, and IoT projects where a reliable battery supply is essential.\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\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003e2 x 18650 Li-ion (3.7V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Charging\u003c\/td\u003e\n\u003ctd\u003e5V via Micro USB, up to 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Voltages\u003c\/td\u003e\n\u003ctd\u003e5V (via boost) and 3.3V (LDO regulated)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Output Current\u003c\/td\u003e\n\u003ctd\u003e5V\/1A, 3.3V\/700mA (combined up to 1.5A)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOvercharge, overdischarge, overcurrent, short circuit, cell balancing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e68 x 52 x 18 mm (approx.)\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-indoor-weather-station\"\u003ePortable weather monitoring station with ESP32 and sensors\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eWireless remote sensor node using ESP8266 and deep sleep\u003c\/li\u003e\n  \u003cli\u003eSelf‑powered mobile robot with Arduino motor control\u003c\/li\u003e\n  \u003cli\u003eDIY handheld game console with a small OLED display\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis shield is directly compatible with most Arduino boards via the standard header layout (Uno, Mega, Nano with adapter), and fits ESP32 DevKit and ESP8266 NodeMCU boards. Output voltages of 5V and 3.3V match common logic levels. The module can be stacked underneath your microcontroller, making it a compact all‑in‑one power system.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eInsert two 18650 cells correctly as marked; the module includes polarity protection but incorrect insertion may still cause damage. Connect a 5V micro USB charger to the input port to charge both batteries simultaneously. The power switch isolates the output, and voltage is available on the 5V and 3.3V pins – no additional wiring required for standard boards.\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 Raspberry Pi?\u003c\/summary\u003e\u003cp\u003eNo, this shield is designed for 5V\/3.3V microcontroller boards. Raspberry Pi requires a stable 5V supply with higher current (2.5A or more) and does not fit the pin layout. Use a dedicated power management module for RPi instead.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I charge the batteries while powering my project?\u003c\/summary\u003e\u003cp\u003eYes, the V8 module supports pass‑through charging. When a micro USB cable is connected, the charging circuit will top up the batteries while the boost converter continues to supply 5V\/3.3V to your board.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if I insert the batteries in the wrong orientation?\u003c\/summary\u003e\u003cp\u003eThe shield includes reverse‑polarity protection, but you should always double‑check the markings. Inserting batteries incorrectly may cause a short circuit and damage the module or 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":53444962386285,"sku":"CDN-0443","price":480.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_07a0e82a-b386-41ef-8333-78a7a4d5a8ee.jpg?v=1781512576","url":"https:\/\/compoden.com\/products\/dual-18650-battery-shield-v8-for-arduino-esp32esp8266-5v33v-output","provider":"Compoden","version":"1.0","type":"link"}