how long will 180 w last w a 900w UPS?

[Katelyn12]

looking to power a xbox slim and small led tv which is 180 watts, how long will this last w a 900 w UPS?? what UPS would u reccomend for longest power time

 

[kanewolf]

The physically largest UPS you can afford. Large physical size == larger batteries == longer run time. APC has runtime estimators. Here is an example -- http://www.apc.com/products/runtime_for_extendedruntime.cfm?upsfamily=27