Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: What is the battery charge life in hours?
Document: I love this laptop, with only a few reservations. I'll start with the downsides:  it doesn't have dedicated home/end keys...instead you have to use the Fn button, which shouldn't be necessary on a laptop this size. Also, it doesn't have quite the same battery life as the MacBook pro. Also it's a tiny bit heavier than might be optimal.That said, just about everything else about the XPS 15 is awesome. It's fast, quiet, cool, and stable.
I received the laptop, set it up and worked with it for a few hours. I turned it off in the evening and the next day when turning it on it would not boot. The hard drive was dead. Back it went.
This model apparently replaces the XPS15-9375sLV. The earlier model had terrible reviews--primarily because the wifi wouldn't work if the laptop was more than 10 feet from the wifi base. Has this issue been resolved with this new Dell model 9062slV? Dell needs to let us know--I'd love to buy this computer, but I can't afford to spend hours on tech support to resolve a problem that carried over from the earlier XPS 15.
I am waiting for Amazon to send a replacement so I can confirm if these issues are as widespread as the support community says they are. **03/23/2013 UPDATE**Replacement came with scratches on the bottom lid. Replacement is exhibiting same throttling issues, with even worse WiFi connectivity than the model it is replacing. Extremely disappointed. Dell needs to fire the idiot engineer in charge of designing the thermal systems for these laptops.How can something look so promising yet have such issues with basic functionality?
everything works good so far.WiFi dual band work finesome old router speed test its no the same as those new dual band routersi notice some light bleed on the screen but i can live with thati recommend this laptop
Which is why one typically buys a laptop.Dell sent a tech service guy out to swap the motherboard to no avail. It also made it impossible to re-install windows 8 because with a new motherboard my old product key would not work and it could not pull the product key from the new motherboard.So now it has been sent off to the Dell Depot to try and be fixed.
Upon receiving it I couldn't save anything to the hard drive, so Dell had me reinstall windows. Then less than a year after I bought it it died. Dell is claiming this is a software issue, therefor refusing to fix it under warranty. When the laptop refuses to even start up that is not a software issue.
Unless one is a real good typist, pressing Fn in order to do PageUp or End is not at all user friendly.Another example: Shift+End or Shift+Home is a very efficient way to select text while editing (MS Word or otherwise). With this keyboard layout, one needs to press 3 buttons to do it. &#8230;  why ?? there is tons of space for 4 more keys &#8230;.!2.
Throttling IS present in this model.-Heat dispersed by the fan is directed towards the display panel, over time this causes discoloration in the screen (ESP.
This laptop looks very nice and it works great. however, there a weird noise coming from the hard drive every time the laptop start up. Im looking into this problem right now to see if there is anything wrong. will update
Answer: Around Six For Light Use And 3 For Heavy use