Has anyone ever used a computer battery backup for lights?

They charge with the grid and then you can easily run a light or two (on/off not constant) for at least a day or two. They are very affordable compared to other solutions, and really plug-and-play.

I wonder, because I have 3 of them in use for my computer/network system and I think for the $ they would could be easily moved if power goes out to continue seeing in the house at night.

One of my systems says it will power my monitor for 11 minutes and I think it's 220 watts (BIG 30" Dell LCD Monitor (not tv)). So that would be a very long time for lights on/off

If I test this out I`ll do a write-up with pictures too. My one backup has a count-down on it for consumption vs.storage too.