For a safe, long-lasting battery that just keeps performing, you cannot do better than Duracell Plus. The new and improved Duracell Plus 9V are alkaline batteries with up to 100% Life Guaranteed (Commercial guarantee vs. the Minimum Average Duration across 2015 IEC 9V battery tests). Ideal for powering everyday devices, such as torches, lanterns, home alarms, etc. Tested for voltage and leakage to ensure safety, Duracell Plus is the ultimate everyday battery. Unused batteries last up to 5 years in ambient storage. 98% of our paper-based packs are made from recycled materials.