Puff'd batteries

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Budhatrain
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Puff'd batteries

Post by Budhatrain » Tue Jul 17, 2012 2:02 am

So it's been about a month since I last charged my lipos and taking some of the fleet out... to my surprise I noticed the hot weather lately and my garage did a number on my lipos... (i store all my lipos in an ammo can so I am sure that didn't help either). Swelled ones on the right, totally spread apart the hard cases.

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So I never seen a puff'd pack before... they feel like they are swelled with air. Oh well, to the trash they go!
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Rcmaniac78
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Re: Puff'd batteries

Post by Rcmaniac78 » Tue Jul 17, 2012 2:07 am

My dad had one do that bud, brand new one... if it was me I wouldn't run it... but if it was andy he would... cause he's NUTS :P
Wait what?

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vonclod
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Re: Puff'd batteries

Post by vonclod » Tue Jul 17, 2012 2:21 am

did you have them stored at full charge?
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Budhatrain
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Re: Puff'd batteries

Post by Budhatrain » Tue Jul 17, 2012 2:45 am

yeah stored at full charge... because I thought I would run them sooner. Is that a bad thing?
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HawnMT
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Re: Puff'd batteries

Post by HawnMT » Tue Jul 17, 2012 2:55 am

Budhatrain wrote:yeah stored at full charge... because I thought I would run them sooner. Is that a bad thing?
Yeah it kinda is. Lipos should be used within a few days of being fully charged. You should store lipos at half charge. Most new chargers have a storage option on them.
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andymac0035
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Re: Puff'd batteries

Post by andymac0035 » Tue Jul 17, 2012 6:38 am

Not only should they be stored at storage voltage......they should be stored in the fridge too (but not the freezer).

35 degrees F is the sweet spot for storing lipo's.
I use the crisper drawer in our fridge for all my lipo's.
The way it works is that it slows down the degradation of the lipo cells.

Those batts are most likely shot, but I bet you have a discharge cycle on your charger. See if you can get your cells down around 3.8-3.85v per cell, or at least under 4v anyways and put that ammo can in the fridge for a few days and see what happens.

Yes, I am nuts and I would try to see what I could salvage.

Oh, and 2 weeks in a bucket of saltwater makes those things safe to toss.
Or just bring them to a recycling center.
I'd not reccomend just throwing them into the trash.

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Re: Puff'd batteries

Post by slapshot1979 » Tue Jul 17, 2012 10:58 am

Please do not just throw them into the trash , there is a proper way to dispose.

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andymac0035
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Re: Puff'd batteries

Post by andymac0035 » Tue Jul 17, 2012 10:00 pm

Good reading right here:

http://www.ultimaterc.com/forums/showth ... p?t=155025
Credit goes to ultimaterc.com member BillDeLong for putting it all together
Simply put, there is no danger in storing your batteries at full charge, however doing so will cause them to age quicker than if they were stored at 40% (storage mode) which is typically around 3.8V/cell. Note that the industry standard range for a LiPo is between 3.0V - 4.2V/cell.
Note that temperature is the second most important contributing factor to the age of a LiPo and that you should maximize the amount of time the pack is kept as close to 33°F as possible without freezing it. Most refridgerators are 45° on the top shelf and 35° on the bottom (crisper drawers).

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Sypher
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Re: Puff'd batteries

Post by Sypher » Tue Jul 17, 2012 10:49 pm

You could do like this with them.... #-o http://www.youtube.com/watch?NR=1&featu ... 1qAml7qBAc
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Budhatrain
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Re: Puff'd batteries

Post by Budhatrain » Tue Jul 17, 2012 10:49 pm

I don't know if the wife will like the ammo can in the fridge but I will try it and see if she notices!

Already ordered three new packs from Hobbypartz.com, gens ace hard cases. All for under $100.

I messed up, either by my super hot garage or holding at full charge or both. I forgot about this but these three packs I let a friend borrow when he first scored a slash 4x4 and he was brutal with his truck- drove slightly better than Chris Webster. I noticed the cases coming apart way back then so it could just be a bad mixture of all three.
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apadua
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Re: Puff'd batteries

Post by apadua » Fri Feb 08, 2013 10:30 pm

Good info here for us lipo rookies..........

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