If your digital camera supports AA batteries, read the camera manual and check to see if it also supports a kind of battery called NiMH. These batteries tend to last much longer than most standard alkaline AA batteries - plus, they are rechargeable, so they can be re-used for quite a long time.

Granted, the cost of four NiMH batteries plus a charger is more expensive than four alkaline batteries, but you’ll more than make up the difference in costs once you recharge and use the batteries a few times.

SUMMARY: Why you should use rechargeable batteries with your digital camera.