MAX17043 Fuel Gauge

The MAX17043/MAX17044 is a sophisticated, host-side fuel-gauge system designed specifically for single-cell lithium-ion (Li+) batteries found in handheld and portable equipment. This highly integrated module provides precise battery state-of-charge (SoC) monitoring using Maxim Integrated's proprietary ModelGauge algorithm, which combines voltage-based tracking with coulomb counting for exceptional accuracy. The device operates via a standard I2C interface, making it easy to integrate with microcontrollers like Arduino, ESP32, and Raspberry Pi. Key features include a low quiescent current of 23µA, a wide operating voltage range, and an alert function for low-battery warnings. The compact design makes it ideal for space-constrained applications such as drones, wearables, portable electronics, and IoT devices. Choose this fuel gauge for reliable, real-time battery monitoring that extends battery life and prevents unexpected shutdowns in your projects.