Energizer 9v Ultimate Lithium Battery, 2-Pack. Up To 10-Year Backup Battery In Ac-Powered Smoke Detectors. Last Up To 20% Longer In Toys Versus Energizer Max. Weigh 1/4 Less Than Standard Alkaline. Perform In Extreme Temperatures From -40 Degree Fahrenheit To 140 Degree Fahrenheit. Leak-Resistant Construction.
