Ansmann Alkaline AA B4 Battery

Used a full set in my flash unit for a wedding and they lasted the entire event without any drop in recycle time. That four-pack is perfect to keep as a backup in my camera bag.

Pulled these out of the pack for a shoot and they held up through a full afternoon of flash use without a single drop in power. The four-pack is handy since I always seem to lose one mid-job, and they fit snugly in my camera's battery compartment.

I've been using these in my speedlight flash for event shoots and they last through over 200 full-power pops without fading. The four-pack gives me enough spares to swap out on the go. Much more reliable than the generic store brand I'd been using before.