Excerpt: This is the second backup I have purchased in the past 5 years. I had a difficult time getting plugs into 2 of the outlets. I was thinking that I might get shocked but they were just very tight.
Summary: I have purchased a total of 3 of these units because the first one saved my computer equipment from a lightening surge..but it must have fried and I can't revive it. I replaced it and bought another for my office, within days one of the new ones went out and would not come back on. I will return it to the manufacturer. They should last more than one power incident.
Excerpt: I have poor electric service(A. Power) with very frequent microsecond power interruptions that has ruined alot of equipment and hours of mycomputer work, so a battery back-up is necessary but I didn't know it needs a $39.99 replacement battery after a few years.