Neat video Andi.
I charged my pack lately after it had sat over winter. I bulk charge and don’t use a bms. Cells were all at 4.13V except one, which was 4.14V. I discharged this one bank through a bulb for a few seconds - all good.
Shipping to USA for the kit will be around 8 GBP.
I finally invested in a JBC soldering station. This makes the power board build so much easier although there is still a good few hours work involved in assembly. I have one for built and ready for a good home. I may build more if there is interest. I ask 80 GBP for the assembled power board.