Silver is used with zinc to make silver oxide batteries
which have a longer life and a higher energy / weight
ratio than alternative battery types such as mercury or
alkaline. Also they have more energy per size and will
last longer than lithium-ion batteries used in computers
and other such electronics.
Batteries
manufactured with silver tend to be small due the cost
of silver, with large silver oxide batteries usually
only used in military or industrial settings where superior
performance is necessary. Small button type batteries
(35% silver weight) are used in small electronic devices
such as cameras and watches and larger batteries
are used in tools, video cameras and increasingly in laptop
computers or similar devices.