Silver zinc battery

Silver zinc cells share most of the characteristics of the silver-oxide battery, and in addition, is able to deliver one of the highest specific energies of all presently known electrochemical power sources.

Long used in specialized applications, it is now being developed for more mainstream markets, for example, batteries in laptops and hearing aids.

Primarily developed for aircraft, they have long been used in space launchers and crewed spacecraft, where their short cycle life is not a drawback.

After the Apollo 13 near-disaster, an auxiliary silver–zinc battery was added to the service module as a backup to the fuel cells.

in the 1960s General Motors developed an electric car called Electrovair, which was powered by a zinc-silver battery produced by Eagle-Picher.