APC Back-UPS 900VA/540W couldn't keep my PC on during a brownout
Hello all, I have a brand new APC Back-UPS 900VA/540W, model BE900G3, that I just bought a few weeks ago since lately my area has been experiencing quite frequent brownout sessions. I don't get a lot of blackouts, but a few random flickers of brownouts here and there maybe once a month could occur, depending on the weather.
The intention here is not even to keep my PC up and running during a blackout, it's just to prevent my PC from shutting down during a millisecond blip of a brownout. My PC draws quite a lot of juice on full load, but most of the time, it is well under the battery's capacity, and does not shut down when I unplug the battery from the wall. It'll stay on, but I haven't tested how long it will stay on for.
Last night, I had two really quick succesive brownouts, each are split seconds and extremely quick. Lights did not turn off, and devices not on any battery backup seemingly did not even turn off but reboots anyway. The only reason I knew I had a brownout was because of those devices that started rebooting and making noises around the house, as well as all my ups backups that make beeping noises when they lose power temporarily.
However, for some crazy reason, my PC that's connected to the APC ups rebooted itself during the brownout! The PC itself didn't turn off as all the lights in the PC didn't even turn off, but something triggered the PC to reboot. Also typically, during a brownout, the PC would turn off rather than reboot, so it's even more odd. Even my server that's on another ups with a dead battery didn't cut off and restart.
According to the ups log, it states about 4 seconds between on battery and no longer on battery, and I've tested the PC running on the battery longer than that, and the PC wasn't even running any load at that moment. I believe the load should be around 50ish % of the battery capacity, so again, it shouldn't just conk out like that.
I'm not sure if it's some kind of setting in PowerChute that caused it, although I don't see any settings in the app that can initiate a random reboot.
Anyone has any insight that they can share on this? I don't think it's a bad battery since again, it's able to keep my PC on if I cut power to it. I also don't think it could be the app since I don't see any setting to reboot my pc. My thought it that kind of surge went through the USB cable to my PC and caused it to potentially reboot, but why wouldn't the surge protector on the ups protect that? Nothing really makes sense here, and it sucks because I wouldn't be able to use this ups backup if it can't prevent my pc from powering down or rebooting during a brownout, but now I also won't be able to return it.
