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3.2v Sinopoply 12 volt question
#1
I have 16 Sinopoly batteries. I was going to go 48v, but now I'm keeping it 12 v. Would someone tell me how it wire this please.
I have an Idea but I don't want to make a mistake. I'm thinking 4 goups of 4, but now sure how to wire those together...

Btw they are 200ah...I also have Batrium BMS on the way...this will go in and RV 5th wheel.

Thankyou
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#2
Assuming it's all LiFePO4 cells, the 4 groups of 4 should be fine.

Wire each group in series to get 12 volts. (in other words use 4 cells to create a 12v battery)

Then wire each 12v group (battery) in parallel with each other to increase the capacity.

If all these cells are new, you can probably get away with 4 BMS mons and add more only if you see balance issues.
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#3
(08-28-2019, 01:19 AM)Crimp Daddy Wrote: Assuming it's all LiFePO4 cells, the 4 groups of 4 should be fine.

Wire each group in series to get 12 volts. (in other words use 4 cells to create a 12v battery)

Then wire each 12v group (battery) in parallel with each other to increase the capacity.

If all these cells are new, you can probably get away with 4 BMS mons and add more only if you see balance issues.

Would I wire the Bms and Inverter to the + of the first cell and - of last cell? I wish I could see and actual diagram of the exact wiring...Thank you so much I know series is + to - but still not sure how to connect the 4 together.
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#4
The inverter doesn't "really" matter, but the rule of thumb is you connect Pos first then Neg.

For the bms however, it does make a bigger difference. Not wiring in the right order could blow out the bms. So this one you should wire from Neg -> Pos as well. Also to note, it's a good idea to connect the balance wires "before" connecting the main power leads.
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