How many amps would a device use per hour from a 12 V battery?

I have a 500W, 240V drill running from a 600W inverter attached to a 12V battery, how many amps would it draw per hour?

Thanks,

Peter

it will not power the drill.

First, the "600W" inverter is 600W PEAK not average power. Average is about 300W, and the drill will cause the inverter to shut down.

To find the current (AMPS), use Ohm’s law;
Power equals Voltage times Current

P
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I | E

500W/240V = ~2A
Your drill pulls about 2Amps

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One Response to “How many amps would a device use per hour from a 12 V battery?”

►BobB◄ on September 27th, 2009 at 6:46 am

it will not power the drill.

First, the "600W" inverter is 600W PEAK not average power. Average is about 300W, and the drill will cause the inverter to shut down.

To find the current (AMPS), use Ohm’s law;
Power equals Voltage times Current

P
____________________
|
I | E

500W/240V = ~2A
Your drill pulls about 2Amps
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