As to the Lithionics temperature sheet, that has been misrepresented as well. They say storing down to -4 for a month is still warranted. That means they are guaranteeing that there won’t be damage in that condition.
To hear some of the claims here you would think if a battery hits -5 it goes nuclear and levels a couple city blocks.
This also means that it’s QUITE POSSIBLE you can store LFP batteries disconnected at -20 degrees for a month with no damage.
Certainly nobody has presented evidence to the contrary.
Hell maybe you can store LFP batteries at -30 degrees for a year with no damage.
All we know is that lithionics isn’t gonna warranty that scenario.
There’s a huge gap between that and claiming that damage will occur.
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