Quote:
Originally Posted by faithie999
does anyone have experience with self-heating lithium batteries? obviously they are somewhat more expensive than non-heating versions but saves the trouble of removing them from the trailer and taking them inside to put on a battery tender when the trailer is stored (outside) for the winter.
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If you are not going to use your batteries in temperatures below 32 degrees then you do not need the heaters. When you stop using your lifepo4 batteries for the season they can be stored outside in the cold.
But you need to store them at 60 to 80% charge and they should be disconnected from any parasitic draw . And definitely shouldn't be charged.
I have read that if not being used you should always store them at 12.8 volts. This makes them last longer. When you buy the cells to build a battery they are shipped at 3.2v. (3.2v x 4 = 12.8v)