That 360W is for when the UPS is in battery / backup mode. But when it's operating in normal mode that that 360W does not count. The connectors of the battery may get loose inside and it's within warranty also. So before making a final call make sue of the warranty.
I've heard a lot of goods about cyberpower but when I tried one once the thing just did not work with corsair PSU. So at last ended up with APC which worked all right with corsair PSU.
That's what I thought too but the ups is warning me that I'm using more than 360W and if there was a powercut it can't handle it, so its warning me in advance, I think its a safety feature built in, I got their latest model APC BX600C-IN 600VA, 230V Back UPS, should have gotten the older model.
, I wish there was some way to disable the warning...
Cyberpower has issues with Corsair PSU? Man that sucks, I have a corsair psu...
This is what the manual says
*i.imgur.com/PA2nRzb.jpg
"Advance low runtime alert" would probably mean : backup will end soon, save your work and shutdown for good.
But the warning comes on when there is power and only when gaming.