Sizing a BMS

[Bigbluecat57]

Trying to determine what size Daly bms I need. I will have (2) 16s lf230ah battery packs connected to a PowMr10k in split-phase mode. I’m running a few things in the shop (mini split, refrigerator, miscellaneous tools, and computer) and will have a transfer switch to the house for backup periods. I don’t plan to ever go off-grid. Help would be appreciated.








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[G00SE]

I would run a 200a BMS on each.
The inverter can pull a max of 220a DC so you really need that much to reach full output capacity
Each battery will get you almost there with 200a whereas a 100a x2 won’t ever get you to meet the inverter output capacity

 

[Bigbluecat57]

I would run a 200a BMS on each.
The inverter can pull a max of 220a DC so you really need that much to reach full output capacity
Each battery will get you almost there with 200a whereas a 100a x2 won’t ever get you to meet the inverter output capacity

The 250ah BMS from Aliexpress was only 9 USD higher than the 200ah so I just went ahead and bought 2 of those. Thanks so much for responding to my inquiry. It is much appreciated.