Deliver the right level of power for your devices Alkaline batteries provide reliable power. Duralock Power Reserve technology delivers the ideal amount of power for most devices. Date coded for information at a glance. Batteries last up to 10 years in storage to provide lasting use. Mercury free for safe use. Duracell (R) Coppertop Alkaline AAA Batteries, 144-Bulk Pack is one of many AAA Alkaline Batteries available through Office Depot. Made by Duracell.