Should you buy a UPS battery backup for your PC or server?

[Windows Central]

Should I get a battery backup for my PC?
PC battery backups, or uninterruptable power supplies (UPS), can be a worthwhile addition to your desktop PC or NAS server. They generally sit near your computer and act as an intermediary for the power from a wall outlet. Think of how seamless the transition to battery power is on a laptop when the AC adapter is unplugged, and you get a good idea of how a UPS works.

Full story from the WindowsCentral blog...