22 CHAPTER 2: GETTING TO KNOW YOUR LAPTOP
Battery Pack
Your laptop is equipped with a high-energy rechargeable lithium ion (Li-ion)
battery pack. Battery life will vary depending on your laptop conguration, model,
applications installed, power management settings, and features used. As with
all batteries, the maximum capacity of this battery will decrease with time and
usage.
e battery meter lights on the battery pack indicate the charge level of the
battery. When you press the battery meter once, the charge level lights illuminate.
Each of the ve lights represent approximately 20% of the total batter y charge.
For example, if four lights turn on, there is 80% of battery charge remaining and if
no lights turn on, there is no charge remaining in the battery.

Recharging the Battery Pack

Your laptop supports both on-line and o-line recharge. Follow the procedure
below to recharge battery:
Ensure the battery pack is installed in the laptop.•
Connect the AC adapter to the laptop and to an electrical outlet.•
e power button light indicates the power and battery status. For details on
the power button light, see “Power Button” on page 20. When the laptop is OFF, a
depleted Li-ion battery will take three hours to recharge.

Battery Maintenance

To maintain the battery pack’s maximum capacity, you should occasionally let the
laptop deplete its battery power completely before recharging.
To carry out a complete depletion of the battery, disconnect the AC adapter and
let your laptop consume the remaining battery power. To speed up the depletion,
use the hard drive as much as possible and set the display as bright as possible.
When the battery is depleted or fully discharged, wait for the laptop to cool down
(especially the battery). e temperature should be within 15°-25°C (59°-77°F).
en connect the AC adapter to recharge the battery.

Frequently Asked Questions

Q: I can feel a mild heat next to the battery pack. Is this normal?
A: e battery will generate heat during recharging and discharging. ere is a
protection circuit inside the laptop to prevent overheating. You do not need to
worry.
Q: My battery operation time is not as long as it should be. Why?
A: e battery is heat sensitive and can only be charged to its maximum if the
battery and its environmental temperature remain within 15°-25°C (59°-77°F).
e more the temperature deviates from this range during recharging, the less
chance there is for the battery to be fully charged. In order to recharge the pack to
its full capacity, allow the battery to cool down by disconnecting the AC adapter.
en connect the AC adapter to start recharging again.