Juanita Higgins, a 14 year old female from the Internet asks on September 22, 1999,How do I generate heat from a battery?
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Depends what kind of battery, but in general, a battery will get warm during a rapid discharge of its potential, possibly by connecting both ends together. This is also known as shorting out the battery. BE CAREFUL!! some batteries can get very hot and dangerous. A car battery will give off hydrogen gas which will explode if there is a spark when you disconnect. Lots of people have been blown up by accident in this way.
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