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 HobbyKing LiPo Dammage

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SamM
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People Skills : 3054
Registration date : 2009-12-22

PostSubject: HobbyKing LiPo Dammage   Wed Jun 08, 2011 6:36 pm

Look at what i got from HobbyKing:





2 cells are bad, the others read 3.8V.

Along with this gem came 2 packs with 1 dead cell each, and 7 good packs.

I opened a ticket with HobbyKing but don't have my hopes up. What disturbs me the most is that this pack probably flew like this.
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Evan Steeves
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People Skills : 2856
Registration date : 2011-02-05
Age : 27
Location : towson md

PostSubject: Re: HobbyKing LiPo Dammage   Thu Jun 09, 2011 12:01 am

WOW iv had 2 cells arrive swelled but never blown like that.

thats the kind of stuff that shouldent be happening in the air anywhere.....
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SamM
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Registration date : 2009-12-22

PostSubject: Re: HobbyKing LiPo Dammage   Wed Jun 22, 2011 5:10 pm

Update:
As expected, HK will be happy to replace the 3 packs if I pay to ship them back to China, which I have no intention of doing.

The question now is whether I should inspect the dead cells in the other two packs for swelling, and force charge them up, or should I replace them with the good cells from the ruptured pack. Any suggestions?

one of them reads 1.7 V
the other reads 0.01 V
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Evan Steeves
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People Skills : 2856
Registration date : 2011-02-05
Age : 27
Location : towson md

PostSubject: Re: HobbyKing LiPo Dammage   Wed Jun 22, 2011 9:05 pm

SamM wrote:
Update:
As expected, HK will be happy to replace the 3 packs if I pay to ship them back to China, which I have no intention of doing.

The question now is whether I should inspect the dead cells in the other two packs for swelling, and force charge them up, or should I replace them with the good cells from the ruptured pack. Any suggestions?

one of them reads 1.7 V
the other reads 0.01 V

put a 2 amp load on the dead lipo cells and try to revive them on the nimh function on the charger if it heats up in less than a minute STOP they wont come back if they maintain voltage and keep climbing up in at least tenths of a volt keep going and watch temps and use a seperate balance card when blast charing on the nimh setting

for lower volt cells its okay to go up to 5 amps but only for about 30 seconds you just want to shock it back to life.

hope this helps
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