Winterizing LiFePO4
I have heard conflicting tips for how to best winterize LiFePO4 batteries. After a great first season out of our 2x Rolls 100Ah connected to 380W solar (2x 190W panels) we are ready to pack up our 2021 Greyhawk 27U for the winter. If anyone is considering doing this, DO IT-- not cheap, but we went over a month without plugging over our Alaska summer.
We store it in a remote lot outside under a cover, so I was thinking of removing the two LiFePO4 batteries and storing in our heated garage with a monthly pep up via our NOCO Genius10. However, I've read it's better to store LiFePO4 batteries with NO charge. And yet a third friend, a EE who builds solar systems for dry cabins, sniffs at removing the batteries from the rig at all, suggesting it's okay for them to live through an Anchorage winter in the cold.
Who's right?
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