Lenovo 3000 G430 User Manual page 31

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:
The amount of energy stored in the battery from the time you start using
your computer.
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 battery pack or
from AC power through the AC adapter.
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.
1
Connect the power cord to the transformer pack.
2
Plug the power cord into an electrical outlet.
3
Connect the AC adapter to the AC power adapter jack of the computer.
You can check the status of your battery at any time by looking at the
battery meter at the bottom of your display.
Chapter 2. Using Your Computer
23