Nice setup!
48, that's a lot of batteries and wiring for 870 AH! They must be physically small. Why did you go that way as opposed to say 8 100AH 48V batteries, or 24V batteries?
I'd probably go with 8 of these:
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thanks man, long time no see @joshman hope you have been doing well :-)
Yeah they are quite small, and need lots of bus bars.
I went with these types because my solar installer recommended the smaller ones. Honestly I did not think about going with bigger batteries and just less of them. I see no reason why it would be good to go one way or the other if the chemistry is the same. And the costs are around the same...
I think the inside of the large batteries has those inside of them. I'm guessing the reason is the small ones don't have a BMS, and he wanted you to run an external BMS for whatever reason.
Oh maybe, no the small ones do not have a BMS.
I am running an Daly open loop BMS for them.