DFRobot (DFR0563) Battery Fuel Gauge, Gravity, I2C, 3.7V, Lithium

Product Overview DFR0563 is a gravity: I2C 3.7V Li battery fuel gauge. This 3.7V lithium batteries are commonly used in many projects. However, the remaining power and voltage of the lithium battery are highly nonlinear. We can only roughly judge whether the battery is full or almost empty according to its voltage. The gravity I2C 3.7V Lithium battery fuel gauge employs a gravity I2C interface, ultra-low operating current, and real-time tracking of the relative state of charge (SOC) of the battery through Analog Devices patented algorithm, eliminating the need for full-to-empty relearning and offset accumulation errors. Plug and play to accurately measure the voltage and remaining power of the battery. The module also features as a low battery power alert interrupt function. Applications include solar weather station, street light lithium battery charger, robotics. Analog Devices patented algorithm, accurate voltage and remaining power readings of lithium battery No full-to-empty relearning process, no offset accumulation errors, plug and play Wide input voltage, compatible with 3.3V and 5V controllers Programmable low power alert interrupt threshold Battery reverse connection protection Input Voltage (VCC) from 3.3V to 6.0V, battery input voltage (BAT IN) range from 2.5V to 4.2V Battery type(BAT IN): 3.7V Li-polymer/Li-ion battery 50µA operating current, interface: gravity I2C (logic level: 0 to 3.3V) Dimension is 22mm x 30mm