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Old Aug 22, 2009, 05:03 PM
B Mac
mach7rc's Avatar
United States, LA, Lake Charles
Joined Aug 2009
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Help with safe Battery Storage

Hello, I have 14.8v and 11.1v lipos piled up. I have always heard that you should never keep you batteries fully charged if you not going to be using them for a while. What would be the recommended safe storage for batteries like these?

B Mac
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Last edited by mach7rc; Aug 22, 2009 at 05:19 PM.
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Old Aug 22, 2009, 05:53 PM
Deletedfor proving Nauga wrong
Joined Mar 2005
15,855 Posts
Store them at appx nominal voltage (3.7 to 3.9 v/cell is OK)

If you are paranoid about storing them... keep them in glass baking dishes with the glass covers on them. That would make it virtually impossible for them to start a fire.

I have mine stacked in a plastic bucket that used to contain kitty litter. More for convenience in carrying them than anything else.

I've abused Lipos pretty badly and never had one go up in flames... I did have one SMALL pack (700 mah 2S) spit a few sparks when it was punctured in a crash, but the pack was essentially discharged. I've bent 2S 4000 mah packs over double in one crash and they still read as holding voltage 6 months later. (they were stored in a metal pot)

You have to REALLY abuse a pack physically for it to go off... They aren't quite as tollerant of electrical abuse. Overheat them when full charged and they will burn.

DO NOT STORE CHARGED LiPos IN A CAR IN THE SUN!
Thats a very good way to start a fire.
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Old Aug 22, 2009, 06:18 PM
B Mac
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United States, LA, Lake Charles
Joined Aug 2009
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Thanks for the info. What about cell readings per cell? I always try and keep them in a fairly cooler place when not in use.
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Old Aug 22, 2009, 06:23 PM
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Keep em in the fridge (never freezer), at 3.7v/cell or thereabouts and they will last a very long time.
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Old Aug 22, 2009, 06:59 PM
B Mac
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United States, LA, Lake Charles
Joined Aug 2009
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Thanks for the help. I would never have imagined keeping them in the fridge. lol. So about 3.7 for each cell is a good reading. Thank you very much.


B Mac
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Old Aug 22, 2009, 09:03 PM
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United States, MO, Warrensburg
Joined Feb 2008
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I store my lipo's in a small fire safe. Its portable enough, and not as heavy as a bigger fire safe. The model is a sentry 1100, I bought it at Walmart for less than $50 bucks if I remember correctly. I can store about 20 3 cell 2100mah packs in it no problem. Its got a key so you can lock them up and keep them safe when not in use. Hope this helps.
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Old Aug 23, 2009, 04:07 AM
Registered User
Netherlands
Joined May 2009
136 Posts
here my solution, I used fire resistant plate to make this



I use storage charge of these Icharge 208B, when they are not used for a longer time. I thought it was 3.8-3.9 volt per cell

Bart,
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Old Aug 23, 2009, 07:29 PM
B Mac
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United States, LA, Lake Charles
Joined Aug 2009
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Wow, Amigob that is a awesome setup. Hats off to ya.
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