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BQ27441 – Overview

BQ27441 Fuel gauge breakout​

The BQ24441 Fuel gauge is a special type of accessory for lithium batteries that very precisely measures the state of the battery. This includes: voltage[mV], state of charge[%] and remaining capacity in the battery[mAh]. It's used with 1S batteries. It is simple to use, as it communicates via I2C communication with a default address of 0x55 and is designed for seamless Qwiic (formerly easyC) connectivity.

Fuel gauge BQ27441 breakout
Fuel gauge BQ27441 breakout

Which product is this documentation for?​

Fuel gauge BQ27441 breakout

Fuel gauge BQ27441 breakout

333065

Key Features​

  • For 1S batteries (4.2V)
  • Measures:
    • Voltage [mV]
    • State of charge [%]
    • Remaining capacity in the battery [mAh]
  • Communication: I2C (default address: 0x55)
  • Connector: 2 × Qwiic (formerly easyC) ports (plug-and-play, no soldering needed)
  • Mounting: Two mounting holes for secure attachment
  • Dimensions: 38 × 22 mm (1.5 × 0.9 inch)

You may also need​

Qwiic cable

Qwiic cable

Qwiic (formerly easyC) compatible cables with connectors on both ends, available in various lengths.