4Tronix Power:Bit Battery Power for BBC Micro:Bit (PowerBit for MicroBit)
This neat little board makes it easy and robust to power your BBC micro:bit on the move. No wires to break or get tangled. It even includes a power switch.
The pins of the micro:bit are replicated so you can plug the unit into most accessories directly
As an added bonus, the edge connector is wired so that you can insert the micro:bit either way round so you can decide whether you want the LEDs facing forwards or backwards (or up or down).
No soldering required
BBC micro:bit is not included.