11 November 2014, 22:23
My watches are either pendulum operated self winders or solar powered, as for batteries some have a shelf life in excess of 5 years like Energiser Lithiums I have some AA lithiums with an expire day of 2019 on them, I slso keep some Lithiym CR123a Batteries with similar lives. And a few of the gang on this forum love something called an Enerloop battery.