Gravity: I2C 3.7V Li Battery Fuel Gauge
I2C Gravity breakout that accurately measures 3.7V lithium battery voltage and state-of-charge with a low-power alert output.
I2C Gravity breakout that accurately measures 3.7V lithium battery voltage and state-of-charge with a low-power alert output.
Power VCC input for the module, supported 3.3V to 6.0V.
Power ground reference.
I2C clock signal, SCL.
I2C data signal, SDA.
ALRT active-low low battery power alert interrupt.
3.7V lithium battery input, 2.5V to 4.2V battery voltage range.
Reverse battery indicator; lights when the battery connection is reversed.
| Pin | Position | Type | Function |
|---|---|---|---|
| + | Gravity connector pin labelled + | Power | Power VCC input for the module, supported 3.3V to 6.0V. |
| - | Gravity connector pin labelled - | Ground | Power ground reference. |
| C | Gravity connector pin labelled C | I2C | I2C clock signal, SCL. |
| D | Gravity connector pin labelled D | I2C | I2C data signal, SDA. |
| ALR | board pad labelled ALR | GPIO | ALRT active-low low battery power alert interrupt. |
| BAT IN | battery input connector labelled BAT IN | Unknown | 3.7V lithium battery input, 2.5V to 4.2V battery voltage range. |
| REV BAT | indicator labelled REV BAT | Unknown | Reverse battery indicator; lights when the battery connection is reversed. |
Power VCC input for the module, supported 3.3V to 6.0V.
Power ground reference.
I2C clock signal, SCL.
I2C data signal, SDA.
ALRT active-low low battery power alert interrupt.
3.7V lithium battery input, 2.5V to 4.2V battery voltage range.
Reverse battery indicator; lights when the battery connection is reversed.
I2C · USB · 5 V · Module
Confirm the data interface matches your host board.
Module pins: +, -, C, D. Schematik maps them to your board in the app.
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