ORIGINAL: gunradd
Using A123s when the capacity seems to start dropping I change them. Got one now thats holding much less then the 2300mah it is supposed to hold.
Using lipos same with capacity and I also watch for high cell (IR) Internal resistance.
I've never seen a 2300 A123 hold 2300. All mine are about 1900 on a 1 amp discharge.
Jason