Lenovo L7500 - IdeaPad U110, User Manual, Page: 53 / 129

Chapter 2. Using Your Computer
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3 Under System icons, select the Power check box.
The rate at which you use battery power determines how long you can use
the battery of your computer between charges. As each computer user has
different habits and needs, it is difficult to predict how long a battery
charge will last. There are two main factors:
ƒ
The amount of energy stored in the battery when you begin to work.
ƒ
The way you use your computer: for example, how often you access the
hard disk drive and how bright you make the computer display.
„ Using the AC Adapter
The power to run your computer can come either from the lithium-ion (Li-
ion) battery pack provided with it, or from AC power through the AC
adapter. While you use AC power, the battery charges automatically.
The AC adapter that comes with your computer has two basic components:
1 The transformer pack that converts AC power for use with the
computer.
2 The power cord that plugs into the AC outlet and into the transformer
pack.
Attention:
Using an improper power cord could cause severe damage to your
computer.
To use the AC adapter, do the following. Be sure to take these steps in the
order in which they are given here.