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Battery Health Monitor A compact device for monitoring the State of Health (SoH) and State of Charge (SoC) of lithium batteries. It uses the BQ27441 fuel gauge IC and BQ24075 charger IC, along with an ATmega328P microcontroller, to provide real-time battery data and display it through LED bars.
This library interfaces with the Texas Instruments BQ27441 Battery Fuel Gauge using software I2C. This allows the device to be connected to any two available I/O pins instead of the hardware-specific I2C peripheral pins.