laptop Li ion battery halp

Try to do NOT use your battery. We all know battery are shit :(

The battery will eventually gain a bit of capacity through a few cycles but don't expect wonders.

The N7110 uses a 17" HD display, i5 cpu and a dedicated graphicscard. That's not quite an energy sparing setup. Monitor brightness is most likely the main battery drainer, just like on mobile phones. So if you turn it down a few notches, you should enjoy some longer lifetime.
Other than that don't expect it to last longer than an hour while gaming or 2-3 hours doing office work. You bought a multimedia desktop replacement, not an ultra mobile notebook. It's either performance or battery life, well OR twice or three times the price you paid 8]

If you honestly use it that often without the power supply, think about buying a 2nd battery, eventhough I don't see how you could possibly use a 17" laptop as some sort of mobile device.

A tip: At home you don't need the battery.

I would contact Dell since your battery time is too low.

Letting batteries to get fully drained was recommended in old days, but that doesnt apply for newer "modern" batteries. Ideally, by not letting battery to get under 30%, you are prolonging its life. That being said, this is the theory for mobile devices such as smartphones or tablets and I am not sure how much laptop batteries are different from those ones (I would say apart from capacity, not much but I can be wrong).

btw, looking at the specs of your laptop, I don't think you are supposed to get more than 3 hours of easy office work out of it, or maybe an hour while playing games. However, eventhought Dell laptops have excellent build quality, there are many other laptops that would your laptops ass in games, speaking of sheer computing power, Dell 17R is mediocore at best, I would even say under average in GPU department.

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