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Old 07-19-2014, 02:39 AM
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Turion Turion is offline
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Three batteries is special because the third battery is reversed in series with the other two. This gives you 24 volts on one side of the motor and a 12 volt potential (if battery 3 is dead) on the other side of the motor. The current moving from the high side to the low side runs the motor, which acts as a generator and outputs additional current.
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