Lithium battery life when van is stored

[LawrenceSolomon]

I have a 2021 Zion Slumber with a 400 amp lithium battery system. I have winterized the van and it is not in use for the winter. How long should the batteries hold a charge? Do I need to plug into an AC outlet?

Thank you.

 

[Neal]

No one can answer that without knowing the demands on the battery. I suggest checking the battery maybe weekly at first, see how it's holding, then consider longer durations between checks. If there are no demands or parasitic loads it should last a long time.

 

[Wemustrv]

You mentioned you have the rig winterized. Are you in a cold climate? If so you have to worry more about low temps harming the batteries. If there are no parasitic draws on the battery it should hold a charge for a long time.

 

[dilbertjth]

Here's an article you may find comforting regarding the LFP batteries. Are Your Stored LiFePO4 Batteries Safe During Freezing Temperatures?

These batteries do have a BMS and the integrated heaters.

I'm assuming you are using the battery disconnect switch to disconnect them for storage (and that the Slumber has such a switch like the SRT does). If not, you should!