Battery Is Size of Paper Clip (Apr, 1956)
Battery Is Size of Paper Clip
Not much longer than a small-size paper clip is a new type of silver oxide-zinc battery. It uses a pile-type construction instead of plates. In dry-charged condition, it is capable of shelf storage for months.
The battery is activated by injecting a hypodermic needle into the top of each cell. Designed by the Raleigh, N.C., Engineering Laboratories of the American Machine & Foundry Co., under contract with the Air Research and Development Command, it will power special electronic gear where weight and size are important.