[quote=Tom_L]OK, so I just bought a pretty darn smart charger as far as the specs go. Will see how it works in practice but I've already determined most of my older NiMH batteries are basically shot. Maybe I'll be able to revive a few with the refresh function but I got another pack of Sanyo 2700mAh plus I see some Eneloops on the way.
So you must have gotten the Maha Powerex MH-C9000 Wizard One.
If so, read those instructions carefully and figure out what the recommended charge rate is and let the charger do it's thing. You'll find it's often far less amperage for a far longer time than the typical drug store "quick" charger.
And that's a good thing.
As someone has already mentioned, charging at too high a charge rate will simply cook the batteries. Sure, "quick" charging is convenient just don't expect the lifetime to live up to the packaging hype.
The battery companies are not in the business of making batteries that last. They're hoping that mister average customer will use the cheap "quick" charger that came with that four pack and wear out those four after perhaps a hundered times.
Also, you just can't ever forget that NiMH batteries self-discharge at about 1% a day