bat:bit battery case for micro:bit

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Love your micro:bit but wish you could go mobile but without the the hassle of having a battery case swinging from the top of it? Or would you like to protect your micro:bit and power it while still having access to the edge connector?
Well now through the magic of springy clips and test pads you can!
This case is made up of acrylic layers and PCB which wrap around the micro:bit leaving the edge connector exposed but giving you access to 2 AAA batteries without the need for cables.
But is it hard to put together? Nope! Check out our short video which explains how to do it, just make sure everything is nice and level and secure to ensure the springs of magical power don't touch what they shouldn't.
  • 1 x front laser cut clear acrylic panel
  • 2 x laser cut clear acrylic panels
  • 1 x bat:bit PCB
  • 4 x M3 dome nuts
  • 4 x M3 machine screws
  • 1 x laser cut acrylic spanner - so no tools required!
What's not included:
A micro:bit! We are assuming if you want to power a micro:bit, then you HAVE a micro:bit already. If you don't and would like to buy one, then please add one to your basket here
Batteries, we don't include them but you can pick them up and other accessories here.

If using the compass you must calibrate it once the micro:bit is installed in the bat:bit so that the micro:bit can compensate for the proximity of the PCB and batteries.


Cant see the video? Click Here to view on our YouTube Information channel

CAD Resources:

  • bat:bit board Step file. Right click & save as
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Additional Information

Part Number:
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5 Reviews

  • 5
    Title of review 816

    Posted by Karl Matthias on 10th Apr 2017

    Does exactly what it's supposed to do. Allows you to run your microbit anywhere without the hassle of a separate battery pack. Does not impede access to buttons, or interfere with the LEDs.

  • 5
    Title of review 815

    Posted by David on 21st Mar 2017

    Very nice and very compact. Keeps your micro bit safe as a secondary feature, but the ability to have a battery powered project without the cables is a major win

  • 5
    Title of review 814

    Posted by John Pugh on 12th Feb 2017

    The BBC Micro:bit is an excellent platform for experimenters of all ages to learn how to code. The only weak link is its power supply system, the JST connection from the battery box to the micro:bit is difficult to remove for both small and larger fingers and it is the only method by which the board can be turned off. The leads would be very difficult to repair if they were pulled on instead of gripping the small JST plug. Proto-PIC's bat:bit gets over the above problem and also packages the BBC micro:bit into a very well protected unit, complete with an on/off switch.<br /><br />I actually purchased two of the bat:bits and assembled the first one having watched the YouTube video on how to construct it. All was well when I switched it on with a brand new micro:bit running its demo sequence. It then began to display intermittent break ups on the LEDs. I decided to take it apart to see what may be causing this problem and noticed that the mating of the bat:bit's sprung battery terminals to the micro:bit's pads needs to be accurate. The perspex parts have been made to a tight tolerance to ensure that this accurate mating takes place. I then reassembled the bat:bit by first doing up all the nuts by hand as recommended but this time I finally tightened the nuts with the supplied tool by selecting diagonally opposite ones. The idea came from tightening car cylinder head nuts in a previous life when the sequence was crucial. From that moment on and three weeks down the line both of my bat:bits have performed faultlessly, having ensured that all component parts are properly centered by the even tightening of the very nice rounded nuts. It is great to see steel nuts and bolts in this design too, I personally don't like the wide usage of nylon equivalents, accepting of course that there are sometimes electrical reasons for having to use them. This is yet another well thought out design from Proto-PIC.

  • 5
    Title of review 813

    Posted by Neville Southworth on 4th Feb 2017

    Both myself and my 10 year old think this bit:bat is superbly designed. Its solid, has a switch for the battery so you don't need to keep pulling out the switchless battery holder that came with the micro:bit, there is no lead, it feels great in the hand,and best of all my 10 year old can handle it without causing static damage to the micro:bit - which seems to happen quite a lot and cause an overheating problem (its believed to be something to do with the USB voltage regulator). But encased inside the bat:bit the micro:bit is very, very, nicely protected. very well thought out and looks great too.

  • 5
    Title of review 812

    Posted by Derek Trueman on 29th Jan 2017

    The bat bit battery case for the microbit is well made and easy to set up. It has the advantage of not only protecting your microbit from possible static discharge but also provides a neat solution for attaching the battery which you can switch on and off. With the microbit installed it sits nicley on a work top solid and robust. No problem with access to all the pins and buttons however you will need an adapter if you wanted to use Proto-Pics excellent micropixel unit.

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