ElecFreaks Power:bit For micro:bit (powerbit)

ElecFreaks Power:bit For micro:bit (powerbit)

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  • Product Code: POWER-BIT
  • Warranty Period: 12 months
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This is very good power board for micro:bit. The Power:bit is a pocket-sized extension board. It is powered by two CR2025 button batteries and carries a buzzer on the board. Due to its small cute size and abundant electric power, it is quite suitable to be applied to micro:bit wearable devices like pedometers, timers, portable music broadcasters and so on.


  • Powered by two CR2025 li-batteries.
  • The buzzer onboard is connected to P0 port on micro:bit.
  • P0, P1, P2, 3V, GND can be lead out by pins.
  • Enable to match micro:bit and acrylic watch band.
  • Dimension: 51.55mm x 41.88mm

Main Components:

Power Switch

The end marked I is for power on, and the other marked O is for power off.

1x4 Pin Connector

It can export pins like P1, P2, 3V, GND. We can use it to do some extensions.

Two CR2025 Battery Sockets

You can place two 2025 batteries(or 3V button battery)into the socket.


The buzzer is controlled by P0 port.

Quick Start

Hardware Connection

Fix micro:bit onto power:bit with 5 screws. Then place a pair of 3V CR2025 battery into the battery socket of power:bit. When we slide the switch to the end marked I, the whole device is powered on. When we slide the switch to the end marked O, the whole device is powered off.


Click to open Makecode online editor, and write your code to make micro:bit screen display a flashing heart.
You can see the whole program from the link here:https://makecode.microbit.org/_MP28fbDmUMfz


Pins & Connectors


Packing List:

  • 1 x power:bit 
  • 7 x 3x5Countersunk Screw

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Tags: Elecfreacks, micro:bit, EF03409, powerbit, coin cell battery