Do the math for me...
...and then tell me how you did it. I have an appliance that is rated 130 watts at 110 volts (house current). How many amps per hour will this appliance draw from a 12 volt battery? TIA Eric
Forum Discussion
smkettner wrote:DrewE wrote:Yes that pesky decimal jumped on me.smkettner wrote:
130w 110v resistive load might still draw 1 or 2 amps from a 12v battery.
A 130W 110V purely resistive load would be 93 ohms, and hence a current of 0.13A at 12V, about 1.5W. If this is an immersion heater, it will be a loooong time before the tea water is hot.
Those decimals can be very sneaky that way, I've found. Turn your attention away for even a moment and they might jump all out of line. They're crafty little buggers.
