Recently, I acquired a Canon 580EX II flash (great flash, BTW) and a pack of 4 Sony CycleEnergy 2700 mAh NiMH batteries plus 360 mA charger. I tested the batteries (fully charged) firing the flash at full power and I got approximately 120 shots. I don't consider this a bad figure except for the recycle time: after 80 shots the recycle time was about 3-4 seconds, and after 100 shots it went down to 8-10 seconds. For the last 5 shots, the flash took about 30-40 seconds to recycle! Do you think these numbers are normal? I wonder if I'd do better with Eneloop batteries (hard to find in my area). Thanks!