Just to be clear, these Lions are not LiPo (lithium polymer) batteries. And that's a good thing. You/we would not want a big LiPo battery in our RVs. It's bad enough that we have them in our phones, tablets, and laptops. LiPo are more efficient and have less weight, but are not as safe as the LiFePo4 that we want in our RVs.
2020 GMC Denali 2500HD Crew 4X4 Gas 6.6L Rockwood 8280WS (30' 5th)
1000W solar; 322AH LFP battery,
900W PSW inverter, NovaKool RFU9000 fridge