Power issue? When I turn it on it works fine for about just 20 minutes and then it goes off, any ideas what the problem could be? Thanks!

Hi, More often than not, it is the internal battery of the UPS that causes switching off. In some instances it may be that too many devices are attached and drawing power from the UPS. In rare instances, it is the electronics controller that is at fault. 1. Since checking the battery involves opening the unit, you may be better off seeking the services of a qualified professional (there are dangerous voltages inside the unit even when off); 2. Try removing some of the devices connected to the UPS and simply leave the PC itself connected to the UPS. All others may be plugged in to the mains; 3. Checking if it's the electronics would be similar to # 1. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.