Those are the same batteries that come with Nest smoke alarms, which say they last 10 years. Energizer says they'll last 20 years in storage. https://energizer.

Those are the same batteries that come with Nest smoke alarms, which say they last 10 years. Energizer says they'll last 20 years in storage. https://energizer.com/batteries/energizer-ultimate-lithium-batteries/ https://energizer.com/batteries/energizer-ultimate-lithium-b...