ANSMANN X-POWER AA 4PK - AA

I've been using these in my digital camera and they last through a whole day of shooting without dying. The voltage stays strong right until the end, which is exactly what you need for flash recharge.

Ran my wireless doorbell receiver off these for almost a year before swapping them out, and the voltage never sagged during cold mornings. The flashlight in my kitchen drawer still reads full power after months of sporadic use, which is exactly what I need for emergency backups.

I put a pair in my effects pedals and they've lasted through three rehearsals without any drop in output. The shelf life is impressive too, considering I bought these months ago and they still work like new.