1800 watts/12v= 150 amps pulled from your batteries.
Yes, 1800 watts divided by 12 volts is a current of 150 amps pulled from the battery, for as long as you run the appliance. Of course, few hair dryers use 1800 watts.
Quote:
Originally Posted by padlin
If you run it for an hour.
Jim is correct, so if you use 150 amps for an hour, that's 150 amp-hours; if you only use it for 1/4 hour, that's 37.5 amp-hours (for instance).
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