Old battery's probably swelled up and that's why it's getting stuck. Don't be shy about removing the entire top cover and front of the frame, if needed.

I have an APC 1500 Backup I bought around 2006 (the battery is tagged 12/06). It's worked fine. Being the prudent sort I thought to buy a replacement from APC in 2010 or so. The original has only just ...

For mission critical business systems, UPSes are a critical necessity as a single brown out, power surge or power outage could easily cost thousands of dollars worth of lost time, lost data and ...