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| BATTERY F.A.Q. |
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| Why, in some devices, are batteries lined up head to tail - while in others, they're placed side by side? |
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Power cells perform differently depending on the way they're connected. If they're lined up in a series head to tail, like in a flashlight, the voltage output increases.
When two 1.5 volt cells are connected head-to-tail, the voltage grows to 3.
In the case of the 9 volt battery it is a series of six 1.5 volt cells.
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