Just a newbie searching for some answers. I have a brand new UPS - came4 days ago. No name brand, bought to survive 3 second power failures. 650 VA, 390 Watts. The comp has a 400 Watt power supply and there was nothing else on the UPS. Don't expect it to be a full load situation.
After running for a few hours, suddenly the UPS switched to battery power. I shut down the computer as soon as I could. The mains were on, everything in the room was fine. The UPS is behind a surge protector and everything else on the surge protector was working fine - not a glitch.
I checked the UPS on other sockets, and nothing doing - it just kept going to battery power. After a few hours of mucking around, letting the UPS sit, trying it on other outlets, etc - decided that I had blown40 bucks, and needed to get a better UPS.
Tonight, came back, and checked again. Now the UPS works fine - shows mains are on. Seems to be charging the battery when switched on.
I am confused. Is the UPS working? What happened? Tried restarting the UPS on a different mains socket with no load so can not be an overload. Let it sit for an hour before restarting - can not be overheating. Brand new UPS that worked fine for 12 - 15 hours over 2 days or so.
Any ideas would be greatly appreciated. I would prefer to use the UPS then to throw it out. But I don't want it to quit on me if the power does go out for a few seconds - I would hate to lose some work because of a power failure. Need to be able to save documents and shut down - nothing more than that.
Your help is MUCH MUCH appreciated. Thanks. Have a good weekend.