I have a Prolink 2000va UPS for about 1 year and half supporting a PC that has a Geforce 4080 and a PSU of 850w
For the last week when electricity black out the UPS will just shutdown with a red led light the moment the electricity goes out, this is happening when gaming.
Sometimes it can support the load even when gaming and for a good minute.
So is my UPS faulty or the batteries are nearly dead and should simply be replaced?
20 days later

Sometimes the UPS is not very high quality and the relays can't switch fast enough, but most of the time it's just the battery. I have a 3090 and a 27" IPS monitor, I can run at least 10 minutes on my 2000va eaton ups. Is that 1 minute during gaming?

Thanks
Indeed I replaced the batteries and now it can support my PC + TV while gaming

2 months later

I had a 1500va/900w Talia ups and i changed the batteries when i built my pc, i’m running a 750 PSU on a 13500k and 3070ti but while gaming the pc turns off.
Will this problem be solved if i get higher mAh batteries for it?
I don’t wanna shell out money for a new UPS.

5 days later

12v 7/9AH form factor LiFePo4 are pretty popular now, they have efficient C rating of 1 which means you will get a longer runtime and last years if not a decade. They have integrated BMS to handle 12V lead acid chargers.
They do have a lower current limit though.
Lead acid are efficient at 0.1C so pulling 9A from 9AH above 10.5V will only last around 30 mins, ~ 1 hour for Lithium, your hardware will pull around 15A assuming its dual battery.
Peukert's law

12 days later

If you don't mind asking, which batteries did you buy? I want to replace the batteries in my prolink 1200va