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Batteries & Chargers Discuss Li-P, Li-Ion, NiMh, Nicad battery technology and the chargers that juice 'em up!

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Old 04-05-2014, 06:54 PM   #1
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Question Thaw before charging?

If a LiPo battery has been stored in a freezer (at storage voltage) does it need to be thawed out before charging to full voltage or can it be charged cold?

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Old 04-05-2014, 07:07 PM   #2
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You should let the pack warm up close to room temp before charging.
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Old 04-05-2014, 08:13 PM   #3
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Freezer? Most people tell you not to freeze a lipo. How does that work out for you?

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Old 04-05-2014, 08:46 PM   #4
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Yeah, I use a fridge but not a freezer. It might be ok though, I think extreme allowable lower temperature for LiPos is about -40C, and a domestic freezer doesn't get anywhere near that cold.
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Old 04-05-2014, 11:59 PM   #5
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Convenience, I have a freezer in my hanger/workshop. Haven't used it to store the batteries yet though. I was just wondering should I ever need long term storage.

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Old 04-06-2014, 12:20 AM   #6
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Yep.
You can charge them cold but if you get a full charge into them while still cold they could over volt as they warm up. Might be ugly.

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