{"product_id":"arduino-mega-4-cell-battery-balancer-kit-maximise-18650-cycle-life","title":"Arduino Mega 4-Cell Battery Balancer Kit - Maximise 18650 Cycle Life","description":"\u003ch1\u003eArduino Mega 4-Cell Battery Balancer Kit - Maximise 18650 Cycle Life\u003c\/h1\u003e\n\n\u003cp class=\"value-summary\"\u003eEvery part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.\u003c\/p\u003e\n\n\u003cdiv class=\"specs-strip\"\u003e\n  \u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Advanced\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 6-8 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 18-21\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Battery management algorithms\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eTake control of distributed energy storage by building your own microcontroller-based battery management system. This kit lets you construct a 4-cell 18650 balancer that actively manages charging and discharging to double the lifespan of lithium-ion packs-critical for solar backup, portable power stations, and EV sub-modules.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou'll assemble a DIN-rail-mounted controller that monitors individual cell voltages via INA219 sensors, switches balancing relays with an Arduino Mega, and logs data to an SD card with timestamps. The final system implements a charge dispatch algorithm that prioritises weaker cells, preventing overcharging and extending overall pack cycle life well beyond a passive BMS.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDesign and calibrate a multi-channel I�C current\/voltage sensing network using the TCA9548A multiplexer and INA219 modules.\u003c\/li\u003e\n  \u003cli\u003eProgram relay-based charge balancing logic on the Arduino Mega, including per-cell cut-off thresholds and idle state management.\u003c\/li\u003e\n  \u003cli\u003eDevelop a charge dispatch algorithm that rotates load based on real-time cell health data from RTC-tagged sensor logs.\u003c\/li\u003e\n  \u003cli\u003eIntegrate an OLED display and SD card datalogger to visualise state-of-charge and track performance over weeks of operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eINA219\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTCA9548A I2C Mux\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5V Relay Module\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTP4056 Module\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e18650 Cell\u003c\/td\u003e\n  \u003cp\u003eFour 18650 cells managed individually. Balancing relays and charge dispatch algorithm maximise cycle life.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/mega-2560-r3-development-board-arduino-compatible-54-io-256kb\"\u003eArduino Mega 2560\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/ina219-bi-directional-current-sensor-i2c-module-cjmcu-219\"\u003eINA219\u003c\/a\u003e x4\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/tca9548a-8-channel-i2c-multiplexer-breakout-for-arduino-raspberry-pi\"\u003eTCA9548A I2C Mux\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/4-channel-relay-board-for-esp32-30-pin-5v-control\"\u003e5V Relay Module\u003c\/a\u003e x8\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/tp4056-1a-li-ion-charger-module-with-protection-micro-usb\"\u003eTP4056 Module\u003c\/a\u003e x4\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/18650-cell-37v-2600mah-li-ion-battery\"\u003e18650 Cell\u003c\/a\u003e x4\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/ds3231-real-time-clock-module-i2c-rtc-with-battery-backup\"\u003eDS3231 RTC\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/microsd-card-reader-spi-module-for-arduino\"\u003eMicroSD Module\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/096in-oled-display-128x64-i2cspi-for-arduino-raspberry-pi\"\u003e0.96in OLED\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/capacitor-variety-pack-6-values-100nf-to-470uf-30-pieces\"\u003e100nF Caps\u003c\/a\u003e x15\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/esp-wroom-32-breakout-board-pcb-55x52mm\"\u003ePCB Prototype Board\u003c\/a\u003e x3\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/vs1053-mp3-recording-module-for-arduino-spi-audio-codec\"\u003eDIN Rail Enclosure\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/soldering-kit-25w-with-solder-wire-flux-paste-compoden\"\u003eSoldering Iron\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/soldering-kit-25w-with-solder-wire-flux-paste-compoden\"\u003eSolder Wire\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is included in the Distributed Battery Storage Controller Kit with Arduino Mega + Relay?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Distributed Battery Storage Controller Kit with Arduino Mega + Relay includes all components needed: Arduino Mega 2560, INA219, TCA9548A I2C Mu, 5V Relay Module, TP4056 Module and more. Everything is pre-tested for compatibility and shipped from Bengaluru, India.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What skill level is required for the Distributed Battery Storage Controller Kit with Arduino Mega + Relay?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Advanced level makers, suitable for ages 18-21. Four 18650 cells managed individually. Balancing relays and charge dispatch algorithm maximise cycle life. Estimated build time is 6-8 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Distributed Battery Storage Controller Kit with Arduino Mega + Relay online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Distributed Battery Storage Controller Kit with Arduino Mega + Relay is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. Ships from Bengaluru in 1-5 business days across India.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Distributed Battery Storage Controller Kit with Arduino Mega + Relay\",\n  \"description\": \"Four 18650 cells managed individually. Balancing relays and charge dispatch algorithm maximise cycle life.\",\n  \"sku\": \"CDN-KIT-1866\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-distributed-battery-storage-controller\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"6020\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Power \u0026 Energy\"\n}\n\u003c\/script\u003e\u003cp\u003e\u003cstrong\u003eChoose your assembly option:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoldering Kit\u003c\/strong\u003e - 25W soldering iron, 60\/40 solder wire, flux, and small perfboard for permanent assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard Combo\u003c\/strong\u003e - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Compoden","offers":[{"title":"Clone \/ Soldering Kit","offer_id":53469282861421,"sku":"CDN-KIT-1866-CL-SLD","price":5650.0,"currency_code":"INR","in_stock":true},{"title":"Clone \/ Breadboard Combo","offer_id":53469282894189,"sku":"CDN-KIT-1866-CL-BB","price":5120.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original \/ Soldering Kit","offer_id":53469282926957,"sku":"CDN-KIT-1866-R3-SLD","price":8090.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original \/ Breadboard Combo","offer_id":53469282959725,"sku":"CDN-KIT-1866-R3-BB","price":7560.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi \/ Soldering Kit","offer_id":53469282992493,"sku":"CDN-KIT-1866-R4-SLD","price":7410.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi \/ Breadboard Combo","offer_id":53469283025261,"sku":"CDN-KIT-1866-R4-BB","price":6880.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/arduino-mega-4-cell-battery-balancer-kit-maximise-18650-cycle-life.png?v=1782286507","url":"https:\/\/compoden.com\/products\/arduino-mega-4-cell-battery-balancer-kit-maximise-18650-cycle-life","provider":"Compoden","version":"1.0","type":"link"}