Nice to see more people building these. Another youtuber building these is Will Prowse. You may find his version may have less soldering. [1] Just use a bigg

Nice to see more people building these. Another youtuber building these is Will Prowse. You may find his version may have less soldering. [1] Just use a bigger battery to get the same Kwh. Here is a smaller version. [2] [1] - https://www.youtube.com/watch?v=4ypDwMYO1rU https://www.youtube.com/watch?v=4ypDwMYO1rU 3.5KWH [2] - https://www.youtube.com/watch?v=WFLYIlCwE6w https://www.youtube.com/watch?v=WFLYIlCwE6w 640WH