One of the less glamorous things I get to do as a watchmaker is to change batteries in quartz watches. While not very glamorous, it pays well. Quartz watches rely on an electric current both for accurate timekeeping and to pulse a motor which moves the hands. Most quartz watches have either a 1.5V silver-oxide power cell or a 3V Lithium power cell. Why do I call them power cells you ask?
There must have been a watchmaker at our store who was very insistent that power cells be properly referred to as such and not batteries, because everyone calls them by there proper name.
bat·ter·y [bat-uh-ree] Pronunciation Key – Show IPA Pronunciation
–noun, plural -ter·ies.
a. Also called galvanic battery, voltaic battery. a combination of two or more cells electrically connected to work together to produce electric energy.
b. cell (def. 7a).
2. any large group or series of related things: a battery of questions.
a. two or more pieces of artillery used for combined action.
b. a tactical unit of artillery, usually consisting of six guns together with the artillerymen, equipment, etc., required to operate them.
c. a parapet or fortification equipped with artillery.
4. a group or series of similar articles, machines, parts, etc.
battery. (n.d.). Dictionary.com Unabridged (v 1.1). Retrieved January 21, 2008, from Dictionary.com website: http://dictionary.reference.com/browse/battery
So, you see while the battery in your car has several cells, the one in your watch is actually a single cell (not a group of them.)