soft switch is on board. All you need is a push button and fuel gauge which is about $10 worth of accessories on ebay. balance leads are maybe another $5. You can buy lower powered ones for less money. We went big.
I may step down to a 50 or 60 amp version next time, but this time around i wanted to see what i could pull out of these cells.
my only issue with this BMS at the moment is that it doesn’t have a single balance port, it is instead split across two physical ports according to the data sheet and that’s going to require that i make an adapter of some kind, which is fine. Its probably a good idea to keep things modular anyway.
double the over/under current/voltage protection seems like a solid reason. Things can be limited on the complete pack as well as on the VESC, but i’m not just building a pack for one application. I’m building a process to build packs for other people’s boards as well.
@laurnts I agree that it could be cheaper. I think the high shipping cost is really throwing it off for us! As far as bypassing the BMS during discharge, you’re right that it’s possible, but then you don’t get the low-voltage protection that the BMS offers. This particular model is probably over spec’d for most esk8 purposes.
@paragon posted a picture above that mentioned the same BMS we just got quotes on, and put that quote at $39 a unit price. I guess that’s why I was bringing this up and shit bruh. Not sure if bringing it up with them is gonna work out for me or not lol
I just emailed them again (making sure to keep the email very simple), because I didn’t receive any confirmation… weird.
I paypaled them the exact amount specified, and added a note makings sure they knew the payment via paypal was for “BMS for Caden Matson ([email protected])” yet I didn’t hear back.
But if anyone has a extra one or if anyone falls off, i’ll take one!