Energizer Ultimate Lithium AA size

A pack of four Energizer ultimate lithium batteries - the world's longest lasting... These batteries operate in extreme temperatures from -40°C to 60°C. They can be used in any application that uses other AA size 1.5 volt battery types. In our opinion the best battery for emergency preparedness.

• Shelf life: Use by 2025
• Longer service than other AA size 1.5 volt battery types
• Even greater service advantage over other 1.5 volt types at low temperatures.
• Will work at temperatures at which other batteries will not
• Much better leakage resistance than other 1.5 volt types
• Performs well after up to 10 years storage
• Much lighter weight - 1/3 less than AA alkaline

see this product's data sheet (external link)