Summary: first thing that happened when I plugged it in was the fault light came on and stayed lit, telling me I had no ground and that I needed to ground my receptacle in the wall... called the factory and they said because I have no ground even my old surge protectors would not even protect my computer properly.. man this is one smart piece of equipment.. so off to Home Depot I go and purchased a 3 ft.
Summary: Pros: Walmart price is best price for similar products. Regulates power fluctations without using battery. Good battery life for power failures. Display shows load and expected battery life. Can mount on wall, desk, or floor. Cons: Haven't found any.