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neonturbo

join:2009-02-27
Lansing, MI
reply to aurgathor

Re: effect of high charging current on NiMHs

I charge AA and AAA batteries at 1C all the time with my Maha C9000 charger, and they don't get remotely warm. I believe it PWM's (pulse width modulates) the current rather than doing a steady current which is supposed to be better for the batteries.

From what I understand, too slow of a charge makes it hard to detect when the battery is full. Too quick causes heat and you won't get the battery full. I gather 0.5-1C is optimal by the research I have read.


aurgathor

join:2002-12-01
Lynnwood, WA
kudos:1
Charging individual cells is easier than charging multi-cell batteries.