Freezing a Moderately Puffed Lipo

[domwilson]

Google freezing laptop battery. You'll find some links on it. I did it. Believe it or not, it actually works, to some extent. Won't fully restore a battery, but it may get you a few extra mah's out of an old pack. Never tried it on hobby batteries tho'.

[silvermansteve]

good to know. and thanks for this information. now i'm going to look into this further and probably try it. did it un-puff your battery though?

[Hatetocrash]

I have puffed and had lipos almost catch on fire...this was due to not knowing what i was doing as a newbee 3-4 months ago...I suggest if u are running them in a nice setup that stays cool a slightly puffed battery should be safe..if u are running it in a setup that puffed them then either down prop or get higher c rated quality batteries...but no matter how good your new batteries are or seem to be test them on 1-2 min run then 3-4 mins then if everything is cool u should be good to go for 8-10 min runs...I always am careful when testing new setups in my boats now...had 3 esc's catch fire,and luckily only ruined two 4000mah 3s packs...Two of the escs where stock garbage,but one was a 120 amp seaking which i over proped because i did'nt know any better...

[silvermansteve]

thanks for the info crash. i'm pretty ok with using the battery the way it is; i've been doing so for a while without loss of life, limb or property. experience and the internet have taught me that a slightly puffed battery is not a certain death warrant.

but, my question was whether anybody here has had first hand experience -- good or bad -- with freezing puffed cells. and domwilson answered the call.

by the way, i've heard people say the best, most reliable way to puff a battery is to run it down too low.... but it was a 20/20 C battery that puffed on me, as opposed to a higher Crated battery.... so i guess when i order more i'll get the higher rated batteries.

[detox]

Running the lipos down too low (past 70% capacity) is the number one cause of puffing. I have two puffy Hyperion packs that I run in my brushless Emax, they are still working just as well as new.