I have a 5 cell LiPo that had one duff cell 4@4.20volts and 1@3.96. Balance charge, fast charge. Nothing changed the situation.
I looked at google solutions and found lots of hair raising schemes most of which would have resulted in lots of magic smoke. However, one suggestion did seem to offer hope without pyrotechnics. Guess what. IT WORKS.
The method is simple. Discharge all cells to 3.50 volts. I found that once the duff cell was below 3.96 volts it fell in line with rest all the way down. Set a balanced charge at 0.1 amps. Be patient, this will take a long time. Once the battery has cleared 4.0 increase current to 0.5 amps and you will get a fully balanced battery, all cells at 4.20 volts.
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LiPo Rescue
- Ian Davis
- Posts: 162
- Joined: 18 Mar 2015, 12:33
- Location: Bishopstoke UK
Re: LiPo Rescue
Mark
Cycled the LiPo to storage value and then balanced charged @ 1.4 amps. All cells present and correct@4.20 volts. The method seems to work altho' so far only a one trick pony. It would good if someone else could check the method with a wayward battery to confirm my results.
Ian
Cycled the LiPo to storage value and then balanced charged @ 1.4 amps. All cells present and correct@4.20 volts. The method seems to work altho' so far only a one trick pony. It would good if someone else could check the method with a wayward battery to confirm my results.
Ian
- Ian Davis
- Posts: 162
- Joined: 18 Mar 2015, 12:33
- Location: Bishopstoke UK
Re: LiPo Rescue
Update on the rescue method described earlier.
Now some months on and the battery is in perfect, balanced condition. I think the concept works well.
Ian
Now some months on and the battery is in perfect, balanced condition. I think the concept works well.
Ian
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- Posts: 497
- Joined: 18 Mar 2015, 07:52
- Contact:
Re: LiPo Rescue
Ian
Have you tried using it in a model, running it down and then recharging or have you just checked its state in storage? I will be interested if it stays in balance and recharges properly "in use".
Regards
AEB
Have you tried using it in a model, running it down and then recharging or have you just checked its state in storage? I will be interested if it stays in balance and recharges properly "in use".
Regards
AEB
AEB = Aeronautical Energiser Bunny (with thanks to CW)
- Ian Davis
- Posts: 162
- Joined: 18 Mar 2015, 12:33
- Location: Bishopstoke UK
Re: LiPo Rescue
John
I've just run it in the Tandam Falke. Took it down to about 3.7 volts per cell, that's below the critical point where the story started. I've just balance charged it and all cells are at 4.20 volts. Seems to have worked.
Regards
Ian
I've just run it in the Tandam Falke. Took it down to about 3.7 volts per cell, that's below the critical point where the story started. I've just balance charged it and all cells are at 4.20 volts. Seems to have worked.
Regards
Ian
- Ian Davis
- Posts: 162
- Joined: 18 Mar 2015, 12:33
- Location: Bishopstoke UK
Re: LiPo Rescue
John
Repeated process but used a different charger to balance. I got 2 x 4,20 and 3 x 4.19. I'm happy with that.
Ian
Repeated process but used a different charger to balance. I got 2 x 4,20 and 3 x 4.19. I'm happy with that.
Ian
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- Posts: 497
- Joined: 18 Mar 2015, 07:52
- Contact:
Re: LiPo Rescue
Thanks for the additional info Ian.
AEB
AEB
AEB = Aeronautical Energiser Bunny (with thanks to CW)