APC-1500 Back -UPS Constant beeping

[har1154]

I came into the office and our UPS was constantly beeping. When looking at the display there is a flashing x by the battery indicator. It has been plugged into power constantly. We have taken all devices off of it and it continues to do this. Any ideas before we have to buy an new one?

[Teken]

The average service life of the internal battery is 2-5 years based on usage, temperature, abc environmental conditions. 

Based on your description the battery is end of life and simply needs to be replaced. 👍