Would anyone be interested in helping me with a calculation?

If I have a 750 watt draw at 120v (it's a heating element) and I want to run
that heating element off a 12v battery using an inverter, how many amp hours
would I be drawing from the battery if I ran that element for about 4-6
hours? It would be turning off/on once the box reaches temperature.. only
enough to keep the temperature somewhat constant.

It'd be nice if the formula was provided.. assuming it's not a very complicated one.

Thanks,

If I have a 750 watt draw at 120v (it's a heating element) and I want to run

It'd be nice if the formula was provided.. assuming it's not a very complicated one.

Thanks,

--

Bill

Bill