In trying to read through the entire Karma General forum, I found a couple of super smart guys talking about batteries. Reminded me of a long standing question:

Can anyone recommend some high quality consumer-grade rechargable batteries?

I'm so damn SICK of having non-recharging batteries quickly fade out and not able to power whatever i have them in. And the constant suspicion that maybe only one of the four batteries in the device have failed, so maybe I'm throwing all four of them out for no reason. And the constant frustration with trying to use a volt meter to determine if the batteries are good or not, but never knowing which devices they are actually strong enough to power, so ending up using ALL my batteries to power simple flashlights.

So yes, any recommendation on a brand or make of rechargable which preferably makes every size (AAA to D) and uses a single recharger. Thanks mucho.