18650 8.4v Battery Pack

thingiverse

I used a BMS Board from this eBay listing, but others may work just as well if you modify the original design file: https://www.ebay.co.uk/itm/283235409837. The Switch can be sourced from here: https://www.ebay.co.uk/itm/123180318387, and the Jack Socket is available at this link: https://www.ebay.co.uk/itm/152642666584. I charge my battery pack with an old 8.4v Sony camcorder charger that I picked up for £1 at a car boot sale. All of this work is done without any expectation of profit, so please take a look at my grandson's first ever song, which he wrote and sang on holiday - it's sure to touch your heart: https://www.youtube.com/watch?v=ZdpMYMSmIr0. For anyone who has already downloaded the STL file, I uploaded an incorrect version that lacks a hole for the charger output connector. I've since revised the STL and re-uploaded it. If you've started printing with the wrong file, my apologies are in order.