Our NiMH batteries can withstand overcharge at 0.1C rate indefinitely. For maximum capacity, a trickle charging can be applied after fast charging. We recommend top-off trickle charging at 0.1C for 2 hours or 0.2C for 1 hour. The chart below shows the average discharge rate of our NiMH batteries. Discharge rates can vary depending on the operating temperature.
Cycle Life is dependent upon usage conditions and type of charger used.
Yes they do lose some capacity, but it is normally very, very gradual. This is true with all rechargeable batteries, but some have a very high rate loss. Our Nimh batteries are designed to have a much longer cycle life than older generation Nimh batteries. See the chart below. NiMH Batteries will all work very well in flash Units, and film cameras as well.