DrkAngel
1 GW
.
... LiPo Resurrection?
Last Spring, had a balancing accident with 1 cell of a 7s 5000mAh Floureon LiPo.
Fully discharged #3 cell. It apparently did not swell (in center of "brick" and discharge was extremely gentle through 12V 3A heating element) <1 Amp @4.2V discharge would lessen till < ¹/₁₀₀A as nearing empty.
All attempt at gentle recharging failed, Ni-Cd charge setting at .1A, would not hold charge!
Months later ...
Rechecking my batteries and on a whim tested the voltage on the Floureon LiPo with the dead cell ... got a .43V, hmm.
Decided to try charging again and surprise, it was taking a charge, started with a "Ni-Cd .1A" setting till above 3.2V then charged LiPo .1A till 3.6V then bumped to .5A till 4.20V.
Ran a test discharge-recharge at 1A for a metered 5128mAh ! Yippee ...
Will monitor for self-discharge before labeling "resurrected".
So ... possibly, there might be hope for some "bad" LiPo! ... ?
Unknown-puzzled as to why it started taking charge again and seems to have full undiminished capacity! ... ?
... LiPo Resurrection?
Dead Cell Rejuvenated after setting for several monthsDrkAngel said:Thread Index
Now that the ...
Floureon 7S 5000mah 25.9V 40C Lipo Battery <$60 delivered from USA are all sold ...
"Recommended for rebuild of eZip 24V RMB battery packs.
Will fit up to 4 x 5Ah = 25.9V 20Ah vs oem 24V 10Ah (5-6Ah usable) SLA.
Every 24V controller I've ever tested works properly with 7s 25.9V battery, but a bit faster with some more torque ...
eZip RMB pack internal dimensions:
150mm x 65mm x 230mm"
Last Spring, had a balancing accident with 1 cell of a 7s 5000mAh Floureon LiPo.
Fully discharged #3 cell. It apparently did not swell (in center of "brick" and discharge was extremely gentle through 12V 3A heating element) <1 Amp @4.2V discharge would lessen till < ¹/₁₀₀A as nearing empty.
All attempt at gentle recharging failed, Ni-Cd charge setting at .1A, would not hold charge!
Months later ...
Rechecking my batteries and on a whim tested the voltage on the Floureon LiPo with the dead cell ... got a .43V, hmm.
Decided to try charging again and surprise, it was taking a charge, started with a "Ni-Cd .1A" setting till above 3.2V then charged LiPo .1A till 3.6V then bumped to .5A till 4.20V.
Ran a test discharge-recharge at 1A for a metered 5128mAh ! Yippee ...
Will monitor for self-discharge before labeling "resurrected".
So ... possibly, there might be hope for some "bad" LiPo! ... ?
Unknown-puzzled as to why it started taking charge again and seems to have full undiminished capacity! ... ?