which BMS for 270a Lithium build

[ian123]

I've ordered Lishen 272a, 12v Lifepo battery cells for my RV battery bank build. Will have 2 X 272amp battery banks. Connecting these with 4/0 cable to a Victron 300w inverter.

I was recommended an Overkill BMS (4s120aBMS+bluetooth) https://www.amazon.com/gp/product/B088JYDKMR/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1

I'm thinking this is not enough for a 270amp battery bank.

Suggestions?

TIA.

 

[HRTKD]

With your two batteries, each with a BMS, you'll have 240 amps that you can pull from the batteries. If you were to max out your Victron inverter and run 3000 watts all the time, then you would be trying to pull more amps through the BMS than they are rated for.

Have you accurately gauged your AC loads? Do you really need 3000 watts on the AC side?

 

[ian123]

Yes. The Victron 3000w gives me the pass through and other functionality I need and its a 50amp RV.