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1.
9V
A small square shaped alkaline battery.
Emits 9 volts, hence the name.
Used for powering anything from remotes to nerve stimulators.

Use your tounge to tounge test the battery to see if its good.
One time i put 20 9v batteries in series and made a huge spark with the ends.
by TDowns August 15, 2007
17 6