Most of these seem woefully expensive (£1500 BMS for a £500 battery seems crazy) or Chinese and still kinda expensive. I stumbled across the open inverter BMS and it seems like a good option, but the only thing mentioning cascading modularity is a single line on the listing and a single paragraph on the wiki. It also says 'firmware isn't finished" elsewhere, so what I wanted to understand is is it useable? Can it do split pack battery boxes? Does it have everything needed to control an EV battery already built in? (Contactors control, pre charge control, charging ect), in addition what is the restocking like? I see there's 5 units but I would need 6 (8 cell pairs per module, one BMS per pair of modules) and I don't want to commit to a system that might take years to restock, it's tricky to guage active development.
I'm also VERY interested in the CCS control board, I don't want an EV I can't drive anywhere far and the OG Zoe did 43kw AC on an air cooled battery so I'd be looking to match this with DC. Giving the current pack a half hour charge and the end goal pack about an hour, does this part work independently from the BMS, with any specific bms's or just the open inverter BMS, my point is I guess if I want to use this do I need to use the open inverter BMS?
Appreciate any direction on these matters
