The batteries of the cameras have evolved. That is why now more is involved than just picking up a pack of AA batteries at the drugstore. Many digital cameras use specific batteries that you can only find in camera or computer stores. Mostly, all batteries used in them are rechargeable. There are rechargeable AA and AAAs. Although you can use disposable, the power drawn is such that using disposable will be costly. You’ll also find rechargeable lithium-Ion batteries as well as NiMH batteries that you can charge hundreds of times.