Seiko and some other manufacturers used Supercaps for a while in their Kinetic watches. Electrically they're fine, but they turned out to have a shorter life than rechargeable batteries. They even replaced capacitors with lithium rechargeables when servicing the older models.
In a backup situation they might do better : I believe the problems were caused by allowing them to discharge and exposing them to high temperatures, neither of which should occur in a timenut application (as long as they're not inside a stabilisation oven). However, don't think of them as a complete solution to ageing nicads - they're still a wet electrolytic and probably have a finer internal structure than a nicad, so are still subject to chemical ageing. On Mon, Mar 16, 2015 at 3:51 AM, Hal Murray <hmur...@megapathdsl.net> wrote: > > csteinm...@yandex.com said: > > The Energizer AA and AAA lithium primary batteries (Li/FeS2) have a > shelf > > life exceeding 10 years, > > Like many things, it's temperature dependent. > > A classic trick is to store batteries in your freezer. Aside from better > shelf life, you can probably find them in the dark. > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.