lipo repair

Discussion in 'Parts & Components' started by rupy mall, Jul 4, 2018.

  1. rupy mall

    rupy mall Member

    Hi everyone,
    I over-discharged my lipo and 1 cell in my 4s tattoo r line does not charge over 1 v.Please help.
  2. RENOV8R

    RENOV8R Well-Known Member

    It's toast. Properly dispose of it. Sorry, I'm sure that's not what you wanted to hear
    rupy mall likes this.
  3. rupy mall

    rupy mall Member

    Thanks bro.I know that it is bad news but thanks for the help/
  4. RENOV8R

    RENOV8R Well-Known Member

    rupy mall likes this.
  5. ArmyVet

    ArmyVet Well-Known Member

    Not sure if yours is beyond help. But this worked for me on 2 Phantom batteries. Yeah I screwed up and let them sit too long.

    I use an old Heathkit Variable Power Supply. And a Volt meter. Variable Power Supplies are available at Amazon.

    I charge the battery using a voltage just a bit higher that the battery reads at the moment. The Heatkit also limits the current. I keep it at minimum. Dont know what that was because no meter in the power supply and I did not bother to measure it.

    After a while I check the voltage. If it is equal to the charge voltage I crank it higher. Little bit at a time. .25 Volts or so/

    I keep going until it reaches something close to the minimum spec for the battery. Put it on its regular charger and VOILA!

    Both Phantom batteries give me the same flight as before.

    Good Luck.
    rupy mall likes this.
  6. holtneil

    holtneil Well-Known Member Moderator

    Try this
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  7. rupy mall

    rupy mall Member

    Thanks for the advice,Actually I got to know the defective cell and tried to charge it through a Energy charger set on NIcd/Nimh at .1 A.It just managed to reach 1V and that too after charging and discharging itself a number times.It seems that the cell is unable to hold the charge to and gets limited at about 1V.
  8. rupy mall

    rupy mall Member

    I tried all this but it is not working.One cell is bad and it does not rise beyond 1V.
  9. holtneil

    holtneil Well-Known Member Moderator

    You can remove the cell that's bad so if it's a 3 cell battery it will make it a 2 cell 7.4 volt
    rupy mall likes this.
  10. rupy mall

    rupy mall Member

    Thanks,I am doing it.I was just wanting to know of any ideas to restore my damaged cell.

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