Good Evening, I have a 12V Car battery which supplies 85Amps. I have a 500W Inverter with a peak of 1000W. One of my computers which I want to run has a 200W power Supply. I would like to know how long I can power this for 12 hours and 24 hours. If the battery cannot power it for that long, then how many batteries would I need to power it for the time wanted? I don't mind creating a battery bank. Thanks.