Need fast recycle time on your flashgun? Try NiZn batteries instead.

New NiZn Batteries Offer Lightning Fast Recycle
As you know, 1.2v NiMH rechargeable batteries recycle most flashes faster than do 1.5v standard alkaline batts. This is because the NiMH's excel at delivering current, which is usually the bottleneck in the flash's recycle rate.

But what if you could combine the fast current delivery of an NiMH with a voltage that is even higher than an alkaline?

You'd have a turbo battery disguised as a AA, is what you'd have.

Sounds great, huh? Well, there is one small caveat …