Another invention during this time was the use of a Leyden Jar as a method of storing electrical energy on a temporary basis . This discovery would prove to be one of the world 's first electric batteries . According to Isaacson (2003 , the final discovery that Franklin made about electricity at the same time as his invention of the battery was the use of positive and negative electrical charges that would help to power the battery . In the early , 1760 's...
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