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HelicopterRadio - Servo - Gyro - Gov - Batt › CRASHED LIPO... Is the battery still usable?
01-23-2007 11:03 PM  10 years agoPost 1
CorradoVR6

rrNovice

CT, USA

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I recently crashed my T-rex from around a 40 foot nose dive into the ground. My lipo battery of course was up front on the lower battery tray and probably took the majority of the hit. I only had 3 runs on this battery and would rather not scrap it. The lipo sligtly bent.... Please view the pictures included and give me some feedback as to if it is still good. Thanks...

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01-24-2007 12:22 AM  10 years agoPost 2
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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That one looks pretty bad. A LiPo with life-ending damage will almost always have an odor that's sweet, like honey. If you smell this smell at all, it's dead.

You could try slowly charging it in a fire proof ceramic container, checking frequently for swelling or the honey odor, and if it makes it through the charge with neither symptom (nor blowing up) it may be okay. It should always be kept a close eye on though for the rest of its life, no matter how short or long.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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01-24-2007 08:31 PM  10 years agoPost 3
CorradoVR6

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CT, USA

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Lipo

Yeah i didn't smell that at all, atleast i believe i would have noticed because i have inspected it pretty throughly. Im very worried that it may go while im flying my Trex.... The last thing i need to do is burn my 800 dollar Trex to nothing.... Or my house down... But atleast in the house I keep it in ceramic and can watch it if i attempt to charge it.... Anyone else have any input as to the internal working of the battery and what causes them to burn and be so "dangerous". ?/

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01-24-2007 09:11 PM  10 years agoPost 4
martinic

rrKey Veteran

NB, Canada

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The dent on the end may not be a problem, but if those are tears or deep scratches (i.e. you see black and not shiny metal) on the top, then it's toast (at least that cell is).

I had my outrunner wear a tiny hole in the end of a lipo once - I sealed it immediately with epoxy, but it didn't matter - the cell died (wouldn't take voltage).

Put it on a balancer if you have one - it'll tell you if one or more cells are way out.

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01-24-2007 09:49 PM  10 years agoPost 5
Dr Lodge

rrElite Veteran

Guildford, Surrey - UK

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Its either OK or its not - cycle it a couple of times under controlled conditions and if everything appears OK after that, I'd go fly.

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200

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HelicopterRadio - Servo - Gyro - Gov - Batt › CRASHED LIPO... Is the battery still usable?
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