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Old Jun 30, 2011, 07:44 AM
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United States, TN
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What Is Correct Voltage For Storing Lipo Packs?

What would be the correct voltage to attain when storing 3S 11.1V 3200mAh Lipo packs? What formula is used to determine storage Lipo pack voltages?

Thank you.
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Old Jun 30, 2011, 09:47 AM
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United States, CA, Bear Valley Springs
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Storage voltage is what you would get them from the store and what they leave the factory at: 3.7v-3.8v per cell or 11.1v-11.4v total for the 3S pack.

mw
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Old Jun 30, 2011, 09:59 AM
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About 70% charge capacity is normal for LiPoly and LiFePO4 (A123/K2)
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Old Jun 30, 2011, 10:05 AM
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General rule of thumb for lipo storage is to have each cell at approx 3.85 volts per cell and store them in a cool dry location. I keep mine in the refrigerator in zip-lock type bags.

If you do a search here in this forum you will find many threads discussing lipo storage.

Don
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Old Jun 30, 2011, 07:55 PM
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Quote:
Originally Posted by DonA View Post
General rule of thumb for lipo storage is to have each cell at approx 3.85 volts per cell and store them in a cool dry location. I keep mine in the refrigerator in zip-lock type bags.

If you do a search here in this forum you will find many threads discussing lipo storage.

Don
Do you keep them in a "lipo-sack" whilst in the fridge.
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Old Jul 01, 2011, 08:24 AM
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No, I just use the zip lock bags. The zip lock bags help prevent condensation on the lipos.

I considered using the lipo 'sacks' but thought condensation would accumulate on the inside of the 'sack'.

Don
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Old Jul 01, 2011, 10:56 AM
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Putting a room temperature anything into a ziplock bag and putting in the fridge is trapping the moisture in the bag with the battery.

You want to protect from condensation when you remove the battery from the cold fridge to the atmosphere, not protect from condensation while in the fridge.

Sounds by your statement that you are putting battery in ziplock, then putting in the fridge. That wouldn't be helping anything.
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Old May 21, 2012, 12:13 AM
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How about storing in the fridge in a hard plastic container? Will it keep moisture out when I take it out of the fridge and leave it inside the container for an hour?
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Old May 21, 2012, 06:31 AM
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Air contains moisture, so ideally you want something you can squeeze all the air out of. Cling wrap?
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Old May 21, 2012, 06:20 PM
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I think I'll stick with room temperature storage. All this trouble is not worth a few bucks for a lipo
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Old Jul 30, 2012, 01:36 PM
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Quote:
Originally Posted by mrodgers View Post
Putting a room temperature anything into a ziplock bag and putting in the fridge is trapping the moisture in the bag with the battery.

You want to protect from condensation when you remove the battery from the cold fridge to the atmosphere, not protect from condensation while in the fridge.

Sounds by your statement that you are putting battery in ziplock, then putting in the fridge. That wouldn't be helping anything.
So whats the correct method
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Old Jul 30, 2012, 05:04 PM
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The amount of moisture in the bag will be the same whether you put it in the fridge or not. Do it after you take it out and the moisture in the bag will condense on the battery. Put it in before placing it in the fridge will cause the moisture in the bag to condense on the bags surface. Which do you think is better? The bag prevents the room air from continually providing fresh water laden air to the surface. The moisture in the bag will is a constant.

Either way is OK
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Old Jul 30, 2012, 06:14 PM
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Originally Posted by hoppy View Post
The amount of moisture in the bag will be the same whether you put it in the fridge or not. Do it after you take it out and the moisture in the bag will condense on the battery. Put it in before placing it in the fridge will cause the moisture in the bag to condense on the bags surface. Which do you think is better? The bag prevents the room air from continually providing fresh water laden air to the surface. The moisture in the bag will is a constant.

Either way is OK
haa haa ok. Too scientific. I just put them in a ziplock, sealed it up and put em in the frig at 3.75-3.8v. 32-35 deg. F.

Im going to take out what I will need for the weekend on Wed and Thurs to come up to room temp and charge Thurs and Fri.

Wish I would have done this a long time ago. I have a bunch of lipos. You know this heat is killing them. Cool is good.
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Old Jul 30, 2012, 07:18 PM
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Hurst, Texas USA
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Originally Posted by SleepySean View Post
Air contains moisture, so ideally you want something you can squeeze all the air out of. Cling wrap?
Seems like unlubricated Trojans would do the trick !
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Old Jul 31, 2012, 08:23 PM
oTc
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Originally Posted by RPatrick View Post
Seems like unlubricated Trojans would do the trick !
Yea...I can see were that would go..Wife asks, "Honey why do you have a large box of condoms?"
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