So I just finished my spotwelder using a car battery, a 500A 12V relais for car things and an arduino with a mosfet to shortcircuit it roughly 30ms. Works surprisingly well.
I bought 50 of the samsung Q30 and am planning for 8s6p. I’ll probably do 2x 8s3p parallel since the space under the board is limited. I’ll include a BMS of course.
I’m a mechatronic student in the 6th semester, still here are my question(s) to you DIYers:
what in general should I look out for? I’ll clean the batteries and the nickel strips first with isopropanol.
Did you shrink wrap your battery pack? If so, how did you do that? If not, why didn’t you? Did you secure your battery pack somehow else or just built a water/dust proof enclosure?
Is there something you regret afterwards or would do differently?
What kind of media can you recommend? I’m watching the YT channel of damian rene and find it helpful, can you recommend good sources besides YT?
Thanks for your time,
Edit1: I’m only using 8S since the VESC cant have more electric turns per minute with a 130KV HUB as I asked in this thread: http://www.electric-skateboard.builders/t/torque-hubs-with-130kv-and-12s-50v/50420 Thanks for your concerns tho!