They do their job very well, they handle power surges and power outages quickly, they do not protect (like other line interactive models) in case of lightning. I change the batteries every 2-3 years, I already have them for 7-8 years.

On the first connection with the USB, it was shocking me with electricity and when I plugged in the computer's plugs, it short-circuited and only worked with a 12-hour charge.

Very good response and advice from the importing company, Nigico Ltd. They tell you what you really need for the support of your equipment.