battery inflated but works fine

Discussion in 'Walkera Runner 250 Pro' started by aerobat77, Jul 26, 2018.

  1. aerobat77
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    aerobat77 New Member

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    after last flight i saw my battery got inflated a bit ( about 100 cycles on the battery ) but works as usual with no downgrade in flight time ( capacity ).

    it can also be charged with the charged as usual , no problems . the temperatures here in germany now are far over 30 celsius .

    replace immediately before next flight , replace shortly or not an issue , maybe due to hot outside temperatures ?

    thanks for hints !!!

     
  2. bjr981s
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    bjr981s Moderator Staff Member

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    Swelling happens over time it generally means you have had a full charge on it and not discharged down to storage voltage before not using it for over a couple of weeks.

    Use a Lipo Checker if it shows all cells at the correct balanced voltage after a flight and they are within reasonable differences +- .1 of a volt you are OK.

    If on discharge after a flight a cell is down .2 or .3 then I would be suspicious. .4 or more I would be concerned.

    Cheers
     
  3. aerobat77
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    aerobat77 New Member

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    thanks much for the reply ! . it has swollen now to a degree i had troubles removing it from the copter . i for precautions replaced it now with a new battery . i will take a closer look now for storage only party charged . hopefully i will now get more than about 100 cycles out of it !
     

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