LiFePo4 winter storage

steveh27 wrote:
I have 2 100 AH LiFePo4 batteries in my Class B Xplorer which I will not use from the first week of December until April. If I disconnect the black ground can I just leave them in the unit? The batteries are in a case under the van.

It it were me, I'd completely disconnect each battery just to be safe. If any voltage imbalance occurs between the two batteries during storage it'll prevent any residual current flow while they're stored. Current flow of any kind in very cold weather is a no-no for lifepo4's. Also, lifepo4's don't like being floated or stored at a high SOC. Ideally, you'll leave them at 50-60% SOC for the winter.