Title: JUNK - DO NOT BUY!!
Review: I bought one of these to support a tower with a 750 watt power supply. This unit should easily handle it. During a power outage, the unit dropped my tower instantly. Factory tech support said my unit was defective. Amazon kindly replaced as I was within 30 days. Got my new unit. Did a power outage simulation. Guess what .... it dropped my tower instantly again. Both times, I made sure the unit was fully charged ... and of course I made sure the tower was plugged into the battery/surge outlet. Amazon paid for return shipping on both units, which isn't really fair to Amazon. These things weigh 40 lbs each. I should have known that this unit was priced too cheap to be true. You get what you pay for. Ultra tech support was friendly, but worthless. I ended up replacing this with a HP UPS unit which isn't rated on paper as big as this one. The HP unit worked fine. Lesson learned.
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