Batteries are such an important “minor,” major component of our shooting. No power, no shooting, it’s that simple! So I’m always on the quest for the best battery I can find so then I can forget it. Got the new MX AA NiMH Batteries (8-Pack, 1.2V, 2550mAh), that’s right 2550mAh rechargeable batteries and do they pack the power! First thing, I stuck them right from the package into the SB-5000 and I popped off repeatedly over 100 flashes without seeing any reduction in recycle time. Then I put them in my favorite AA charger, topped them off and popped off a few hundred more flashes with no slow down in recycling. My testing has just begun but see an improvement over my last brand so I’m sticking with these. Gotta love that power!