Duracell CopperTop All-Purpose alkaline batteries are not only dependable, they’re also long-lasting. You can take comfort in a 10-year (5-year for 9V) in storage with Duralock Power PreserveTM Technology. They’re great for many of the devices you use on a daily basis. And from storm season to medical needs to the holidays, Duracell is the battery you can trust. Features Reliable, long-lasting powerDuracell special application designUse in important devices like your key fob, car alarm, GPS tracker and other security devicesDuracell special application batteries offer reliable, long lasting power. Designed for use in glucometers, electronics, security and fitness devices. Lithium batteries.