Comments on: How many amps would a device use per hour from a 12 V battery? http://www.acoupower.com/amps/how-many-amps-would-a-device-use-per-hour-from-a-12-v-battery Subwoofer drivers Fri, 10 Feb 2012 15:43:35 +0000 http://wordpress.org/?v=2.7 hourly 1 By: ►BobB◄ http://www.acoupower.com/amps/how-many-amps-would-a-device-use-per-hour-from-a-12-v-battery/comment-page-1#comment-7664 ►BobB◄ Sun, 27 Sep 2009 11:46:59 +0000 http://www.acoupower.com/amps/how-many-amps-would-a-device-use-per-hour-from-a-12-v-battery#comment-7664 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<br><b>References : </b><br>yahoo would not allow me to format the formula tree correctly. 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
References :
yahoo would not allow me to format the formula tree correctly.

]]>