Our local grid was having some power fluctuations, so I bought a mini 1500LCDT from Tripplite. Money wasted. Sometimes it works, but it often, even when the main power is stable, will kill all power to the backed up devices for no reason. It also likes to do this when running on battery with 75% or better charge. I THINK my devices have been depowered less with the Tripplite than with a simple surge protector, but it's a really close race. And with what I spent on the Tripplite vs a $20 surge protector, that race should be won hands down. The documentation that came with the device and the customer service were both laughable as well.