I have a 580 EX Speedlite and I use Everready NiMH rechargeable batteries with it. I just went out with a fully charged battery set and was able to shoot only around 20 fill-in flashes with it before they died. The batteries are relatively new and I have 3 sets of them. I roughly get equivalent performance from all of them. I also have 2 chargers, one is a quick charger and the other takes around 8-10 hours for a full recharge.


This morning's shooting was in cold conditions around 30F or -1C.


Just wonder if this is typical with other users or do I have defective stuff. Any suggestions would be appreciated.


I use to use nicads with my Speedlite 199A and got great durability.