I am needing 16 280ah cells and 150-200amp BMS. I'm building a 48v system for my RV going to go with a growatt 3000 for basic power needs and 1 AC unit.
so a couple of choices .... right now the approx price of a 280Ah - delivered - out of China is about $130(ish) ...the average wait time is about 70-90 days ... and you really are never quite sure if the box is going to arrive usable or smashed to hell (thanks FEDEX) or if you are actually getting GRADE A or B------ .......
OR you can get them from a US Warehouse.. I think DELIGREN has one in CA (?) but the one I use is the DONCAN in Houston .. @Jenny Wu ... I think those batteries run between $145-160 depending if you pick up or have shipped to your location ((BUT don't quote me but pretty close)) ...
I have no association with DONCAN but as of right now they are my go-to-company .... hopefully that continues ...
FOR BMS my (2) go-to would be the DALY 200A and the QUCC that @Off-Grid-Garage recommended (watch his videos)
Contact @Jenny Wu on this forum ... she can point you in the right direction .. she is a vendor ... and has US locations for immediate shipping at the same prices typically as you will get in China ...