Ultimate Milwaukee M18 Power Bank (With 240v out)

I needed a good power bank with 100 or so watt hours, and decided to use my power tool batteries, and also give myself 240v mains voltage if required! I didn't cover this in the video, but the rotary switch switches negative on a 60 amp relay that closes the circuit between the battery and the electrics.

It has 4x USB 2.1 amp outputs, a 12v output and a 240v 150w output.

Some parts were obviously designed for CNC machining - but they can be printed as well!

Check out the attached (old, sorry!) Youtube video for more details.