meeshu
Enlightened
I have a couple of Ni-MH Energizer rechargeable cells. Had these for maybe 15 years, but have hardly been used. Recharged maybe 6 times or so (only)!
Noticed that these cells are not recharging anywhere near their rated capacity of 2500 mAh. Maybe charging to around 1800 mAh only.
From various online sources I understand that chargers with refresh function might revive these cells to (near) their rated capacity. Unfortunately the chargers I have tried (OPUS BC3100, BC2000) have not been successful in improving these cells capacity (much).
I understand that a more drastic approach might be to "zap" these cells briefly using a current limited/regulated 12 volt power supply. The 12 volt power supply should limit current to no more than about 0.5 amps (I think) and the power supply should only be connected to the Ni-MH cells for only a second or so.
The idea is, apparently, to "realign" or "rejuvenate" something within the cells to enable the cells to accept more charge after "zapping" them with 12 volts.
Can anyone one confirm that this procedure actually works?
Failing this, are there any good chargers that will (successfully) rejuvenate old Ni-MH cells? If so, which chargers please?
Thank you!
Noticed that these cells are not recharging anywhere near their rated capacity of 2500 mAh. Maybe charging to around 1800 mAh only.
From various online sources I understand that chargers with refresh function might revive these cells to (near) their rated capacity. Unfortunately the chargers I have tried (OPUS BC3100, BC2000) have not been successful in improving these cells capacity (much).
I understand that a more drastic approach might be to "zap" these cells briefly using a current limited/regulated 12 volt power supply. The 12 volt power supply should limit current to no more than about 0.5 amps (I think) and the power supply should only be connected to the Ni-MH cells for only a second or so.
The idea is, apparently, to "realign" or "rejuvenate" something within the cells to enable the cells to accept more charge after "zapping" them with 12 volts.
Can anyone one confirm that this procedure actually works?
Failing this, are there any good chargers that will (successfully) rejuvenate old Ni-MH cells? If so, which chargers please?
Thank you!