{"product_id":"max17043-lipo-fuel-gauge-module-i2c-single-cell-li-ion-soc-arduino","title":"MAX17043 LiPo Fuel Gauge Module — I²C, Single-Cell Li-ion SOC, Arduino","description":"\u003ch2\u003eMAX17043 LiPo Fuel Gauge Module — I²C, Single-Cell Li-ion State-of-Charge\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMAX17043 fuel gauge module\u003c\/strong\u003e uses Maxim's ModelGauge algorithm to accurately measure the state-of-charge (SOC) of a single-cell Li-ion or LiPo battery — reporting remaining capacity as a percentage (0–100%) via I²C without requiring a sense resistor. Unlike simple voltage-based battery monitors, the MAX17043 compensates for battery aging, temperature, and discharge rate to provide accurate SOC even under varying load conditions. Includes schematic, Eagle files, datasheet, and example code.\u003c\/p\u003e\n\n\u003ch3\u003eModule Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIC:\u003c\/strong\u003e MAX17043G+U (Maxim Integrated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I²C (address: 0x36)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e Single-cell Li-ion \/ LiPo (3.7V nominal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSOC Output:\u003c\/strong\u003e 0–100% (1% resolution)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Measurement:\u003c\/strong\u003e 2.5–5V range, 1.25mV resolution\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlgorithm:\u003c\/strong\u003e ModelGauge (no sense resistor needed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlert:\u003c\/strong\u003e Programmable low-battery alert threshold\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Hardware and software reset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3.0V – 4.5V (battery powered)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuiescent Current:\u003c\/strong\u003e 23μA (active) \/ 3μA (hibernate)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMAX17043 vs Voltage Divider Battery Monitor\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMAX17043 (this module):\u003c\/strong\u003e ModelGauge SOC algorithm, accurate % under load, compensates for aging — for accurate battery level display\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage divider + ADC:\u003c\/strong\u003e Simple voltage reading, inaccurate under load, no aging compensation — for rough battery level indication only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eArduino Wiring\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVCC → 3.3V | GND → GND | SDA → A4 | SCL → A5\u003c\/li\u003e\n  \u003cli\u003eCELL+ and CELL- connect to battery terminals\u003c\/li\u003e\n  \u003cli\u003eUse SparkFun MAX17043 library from Arduino Library Manager\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIoT device battery level display\u003c\/li\u003e\n  \u003cli\u003eWearable device battery percentage indicator\u003c\/li\u003e\n  \u003cli\u003eDrone LiPo battery monitor\u003c\/li\u003e\n  \u003cli\u003ePortable Arduino project battery gauge\u003c\/li\u003e\n  \u003cli\u003eLow-battery alert system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMAX17043 LiPo fuel gauge module — I²C, ModelGauge SOC, 23μA active current for accurate Li-ion battery level monitoring in IoT and portable Arduino projects.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991448178923,"sku":"\u003cnone\u003e","price":18.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/max17043-lipo-fuel-gauge-battery-detection-i2c-module.webp?v=1761804379","url":"https:\/\/keszoox.com\/products\/max17043-lipo-fuel-gauge-module-i2c-single-cell-li-ion-soc-arduino","provider":"Keszoox","version":"1.0","type":"link"}