'''Activated shelf life''' is the period of time, at a specified [[temperature]], that a charged [[battery]] can be stored before its capacity falls to an unusable level.<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> | '''Activated shelf life''' is the period of time, at a specified [[temperature]], that a charged [[battery]] can be stored before its capacity falls to an unusable level.<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> |