I got a BELKIN 830 Watts UPS for free. My question is that how many hours can it run my fancy build:
http://www.newegg.com/Product/Product.aspx?Item=N82E16842101225
AMD Athlon x2 4400+ 2x1gb 300psu 2 7200rpm hard drives 1 dvd rom
Well, depends on the condition of the batteries. Unfortunately there is no formula to calculating the amount of time it will last. Even more annoyingly, Belkin do not list how long it will last in there specs.
So the answer is. Charge it up, unplug it from the wall and let it run down.
It has not meter tell how charged up it is. You think 3 hours of charging will work?
(The computer is only used for backing up files)