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Reverse charged NiMHs?

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Oct 24, 2006
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Okay, well this is a bad question to be asking in any case, but does anyone know what the consequences are of charging some NiMH batts in reverse (by accident!). We're talking a 6 cell series pack rated for 7.2V nominal, that now reads in at -2.63V ( ;D). If this thing were now hooked up correctly, is there any chance it would still work? Effects on lifetime, etc? Thanks in advance
 

S

SenKat

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Pretty damned lucky it didn't explode on you, man :eek:

If it is actually NOT melted at this point, hook it back up the regular way, and charge it again....I would, to be on the safe side - seperate the charger and batts from anything else if at all possible - like put it in the kitchen sink (with no water, obviously ! LOL) where if it does happen to have bad issues, it will not damage anything. Batts with a negative charge CAN be safely charged, though - they are not Li-Ion or Li-Polymers - so the expectation of explosion is minimal, if at all :)
 

a_pyro_is

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I killed a 6V pack that way about a month ago. I tried to give it a Slow charge, but it never would hold the 6V. It always dropped right down to 3-4V as soon as it was off the charger. I don't know if a couple charge/discharge cycles would have helped, I just sent it to be recycled and bought a new one.
What capacity what this battery? I've a couple small ones sitting around here ;) no idea how old they are though... :-?
 




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