Battery charger

Battery charger

Battery charger

Make sure your batteries are always ready for action!

How it works

Use the Bitcraze battery charger to always have your spare batteries fully charged to maximize your flight time. If you’re a bit handy with a soldering iron you can even solder multiple chargers together for multi-battery charging.



  • 500mA single-cell Li-Po battery charger
  • Charging indicator
  • Connection points for chaining of multiple chargers

Mechanical specifications

  • Weight: 1.2g
  • Size (WxHxD): 10.5x16x1.6mm (not including cable)
  • Connector for the Crazyflie 2.X stock battery

Mechanical drawing


Electrical specification

  • Max charging current: 500mA
  • Supply voltage: 5V
  • micro-USB charging connector
  • Based on the MCP73832 single-cell Li-Po charger
  • Connection points allows chaining of multiple chargers (1x2, 2.54mm pitch)


Connect the battery charger to a standard micro USB connector and the battery connector to a battery. The LED is lit up while the battery is charging and turns off when fully charged.

Connecting the charger


Using a battery under direct sunlight may cause overheating, which could result in invalidation or fire. Battery should be charged with proper charger, in compliance with correct operation instructions. Never charge a battery unattended!


It is possible to chain multiple chargers together to create a multi battery charger. The P2 connectors on the chargers are simply soldered in parallell.

Below are pictures of one possible setup. Don’t forget to check the rating of the connectors and make sure you use a power supply that can supply at least 500mA per charger.

Chaining Top

Chaining Side


If you have any further questions please contact