USB Power

When your BBC micro:bit is connected to your computer with the micro USB, it doesn't need another power source. 




Battery Power

The micro:bit can also be powered using 2 x zinc or alkaline AAA batteries. To insert the battery connector, pinch together the two wires at the base of the connector and bush into the JST socket on the board. To remove, pinch the wires and wiggle the connector to release.


Battery Warnings

  • Do not try to charge normal (non-rechargeable) batteries
  • Please do not mix different types of batteries or mix new and used batteries
  • Please use batteries of the same or equivalent type as those reccomended
  • Please insert the batteries the correct way round (with the correct polarity)
  • Please remove spent batteries form the battery holder
  • Do not short-circuit the battery supply terminals, for example by placing a metal object across the terminals
  • Only use Zinc or Alkaline batteries with your BBC micro:bit
  • Please do not use rechargeable batteries




Further Information

The micro:bit will automatically switch to USB power when it detects a connection and to battery power is the USB connection is removed.


If you are using your micro:bit with a tablet or mobile, you connect to it with Bluetooth and will also need batteries to power it.


You can read about the power supply on the tech site