Fuel Gauge BQ27441 Breakout
Fuel gauge is a special type of accessory for lithium batteries that very precisely measures the state of the battery. This includes current voltage [mV], state of charge [%] and probably most interestingly: remaining capacity in the battery [mAh]. It is used with 1S batteries, and provides all this information via the I2C interface.
On our board you can find qwiic connectors which allow I2C communication with microcontroller. Also, there is a JST input for any pouch battery you can find in our offer, as well as quick connect terminal connector for input if your source doesn't have JST connector.
- For 1S batteries (4.2V)
- Communication: I2C
- Measures: voltage, state of charge, capacity
- Dimensions: 38 x 22 mm / 1.5 x 0.9 inch
Interface
| Interface | I2C |
|---|---|
| Qwiic Compatible | Yes |
| I2C Address Default | 0x55 |
| I2C Address Changeable | No |
| Breadboard Compatible | Yes |
Measurement
| Measurement Types | Battery State, Voltage |
|---|
Power
| Supply Voltage Min V | 3.3 |
|---|---|
| Supply Voltage Max V | 5 |
| Logic Level | 3V3 Or 5V |
Other
| Ic Part Number | BQ27441 |
|---|
Plug into any Soldered Dasduino or microcontroller with an easyC cable — no soldering required.
Add the Soldered library for your language (below).
Open the get-started example and read your first value.
