Don’t know if this idea is new or not, but I’d like to hear what you guys think of this. Any apparent weaknesses you think of in this way of designing a pack?
The idea is to have a plastic sheet laying on top of the cells to which copper foil had been attached to form all parallel and series connections. Cells have nickel strips spot weldered which are then soldered onto the copper to form parallel groups.
A friend bought one and I helped assemble it.
1- pain in the ass to assemble
2- with shipping, your better off paying another $30-40 and buying a spotwelder
3- vibrations kill the pack, no matter what. We hot glued all of the nuts and expanding foamed inbetween the batteries to make sure nothing got loose, but slowly the cells separated from the shells.
I wouldn’t recommend it unless your building a powerbank for a phone or something. Not for under a board.
I can add. They fucking blow. connection is not solid and falls apart with vibration. The friction fit is so tight that they tear the heatshink wrapping of the cells. You’re better off 3D printing some brackets and spotwelding/soldering the connections.