After build support - battery backups

I have been having issues where when I play games on my PC, my battery backup begins emitting a constant beep tone. Usually, when I exit out of the game or even pause, the beep will stop after a second or two. Today, the beeping continued even after my PC shut off and I disconnected the UPS from the wall.

My research has led me to believe that I may have been drawing too much power from it and that it may have failed. (Can someone please confirm this diagnosis if possible or suggest alternatives?)

In response, I am looking to get a replacement. The old UPS was rated as having 450 W capacity. According to my pcpartpicker build, I was expecting to draw 230W but my power supply is rated up to 850. I am thinking that the 230 W number may be wrong or just during normal usage instead of gaming (confirmation?) and so the next UPS I am looking at is rated up to 900 W.

$200 or so isn't going to break the bank but I would love to have some confirmation from those of you who actually know computers unlike me. Does this all check out?

Thanks in advance.