20 AA & 20 AAA BATTERIES: This convenient combo pack includes 40 total batteries (20 AA and 20 AAA super alkaline batteries) which are bundled together in a recloseable bulk package for easy storage and organization, and feature 1.5 volts of long lasting power so that you can keep your professional and household devices running for longer. These are NOT rechargeable batteries EVERYDAY DEVICES: Each ACDelco AA and AAA battery delivers optimal power to common everyday household devices such as wireless mice, flashlights, clocks, remote controls, game controllers, digital cameras, computer mice, electronic toys and more LONG LASTING POWER: ACDelco super alkaline batteries deliver long lasting maximum power that is consistent and reliable 10-YEAR SHELF LIFE: All ACDelco alkaline batteries are built to last with an impressive ten-year shelf life. We advise keeping your batteries in a cool dry place and out of the sun. Stainless steel coating prevents leakage so that you can keep them