I bought this UPS because I live in Tucson where we get storms every summer with frequent lightning, and I also happen to have my computer in a room with that doesn't have the best quality electrical wiring. This combination makes power flickers and surges a daily occurrence, which wreaks havoc on my power supply and components, so I wanted a quality battery backup and power conditioner so I wouldn't have to worry about my investment being fried. The OmniSmart 1500VA does all that and more, with a long battery run time so I can safely shut down, and enough juice to power a system with multiple monitors, a power-hungry graphics card, and a large array of storage drives. The only negative I have encountered so far is that the software console (PowerAlert) can sometimes be unresponsive in that it shows my device as 'inactive,' when it clearly is functioning and fully charged.
I have two computers connected to the UPS to keep them from going down when we have short power outages. So far, It has worked fine. The load is about 600 watts and all I want is to keep them up long enough for me to shut them down gracefully. I could not get the automatic shutdown system working on my windows 10 PC and it is not supported on my MAC.
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