I found AA batteries at a local "Everythings a Dollar Store". 4 AA Sunbeam batteries for $1. I was buying the Duracells at the regular Dollar Store. After I started using the Sunbeams I didn't notice any difference in battery life. So I have used the Sunbeams ever since. Just picked up a charger for the rechargeable batteries at the local Goodwill store for $2. Charges 4 AA or 4 AAA batteries. I will get the batteries and give those a try also. I always keep a few packs of alkaline handy just in case. They also have the 9 volt (2 pack) Sunbeam batteries for $1.