We either didn't have and power problems or the unit is doing it's job.

A must have for a Windows PC will save you a big headache if your area is prone to power problems

The unit is good never had to complain about it.it's good for what I need it for it's reliable.specialty for South Florida with all the power problems we have!I would recommend is 100%

Note that this thing takes forever to charge itself (think 12+ hours from 20% which was the magical 5 minute cut off on my system), probably to avoid unnecessary lead-acid battery related risks on your carpeted floor, but that shouldn't be an issue unless you're having constant power problems