With other batteries, you do not know when they are going to run out of juice, but with Duracell Turbo Max AAA 1.5 V 3+1'S, you know. Thanks to the power indicator, you can check the batteries to see the amount of power remaining in them. If you insert these batteries in an electronic device, neglect it for years, and then take it out, your device will still work. The batteries have a long shelf-life and will not drain if kept in storage. If you are searching for batteries that give you more power and less wastage, you are looking for these batteries.