How Many Watts Are in a Car Battery?

While the unit of power for a car battery is volts and not watts, you can do some math conversions to find just what their wattage is. 

The basic math is that watts are equal to the voltage multiplied by amps. Both of these are measured in car batteries –usually at 12.6 volts and 105 amps. So, 12.6 * 105 equals 1,323 watts, for example. 

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