WORLD'S SMALLEST BATTERY
CD 2055034 E&MP3.017
DEC 20 1965
Close-up of a new high-energy mercury battery, the smallest of its kind in the world and intended for use in “all-in-the-ear” hearing aids.
Weighing less than 1/4 of an ounce, and 1/8” indiameter, it is half the size of an aspirin tablet. The tiny 1.35 volt Mallory battery provides the highest watt-hours of any commercially available battery of its size and kind.
Shown here in a comparison of size with a pencil, it is rated at 16 milliampere hours.
Original Caption by Science Service