how long does a battery of Dell XPS 13 last?

[csxshah]

I have bought a new Dell XPS 13 touchscreen laptop Intel core i7,Quad HD and have not had chance to use it yet. I have noticed some people complain about the battery life. How long does the battery really last? I would like to know if 3 to 4 hours battery life some of the reviews claim is factual.

 

[adroit14]

Well on this website it says that the computer lasted about 10 Hours and 3 Minuets running a program the simulates slightly less than an average day of work on it.
http://www.trustedreviews.com/dell-xps-13-review-performance-and-battery-life-page-2