The battery charges whether the computer is off or in use, but it charges faster when the computer is
Charging may take longer if a battery is new, has been unused for 2 weeks or more, or is much warmer
or cooler than room temperature.
To prolong battery life and optimize the accuracy of battery charge displays, follow these
If you are charging a new battery, charge it fully before turning on the computer.
Charge the battery until the battery light turns white.
area may show 100 percent charge before the battery is fully charged.
Allow the battery to discharge below 5 percent of a full charge through normal use before charging
If the battery has been unused for one month or more, calibrate the battery instead of simply
The battery light on the computer displays the following charge status:
Off: The computer is running on battery power.
Blinking amber: The battery has reached a low battery level, a critical battery level, or there is a
Amber: The battery is charging.
White: The computer is connected to external power and the battery is fully charged.
Maximizing battery discharge time
Battery discharge time varies depending on the features you use while on battery power. Maximum
discharge time gradually shortens, as the battery storage capacity naturally degrades.
Tips for maximizing battery discharge time:
Lower the brightness on the display.
Check the Power saver setting in Power Options.
Remove the battery from the computer when it is not being used or charged.
Store the battery in a cool, dry location.
Managing low battery levels
The information in this section describes the alerts and system responses set at the factory. Some low-
battery alerts and system responses can be changed using Power Options in Windows Control Panel.
Preferences set using Power Options do not affect lights.
Identifying low battery levels
When a battery that is the sole power source for the computer reaches a low or critical battery level, the
battery meter icon in the notification area shows a low or critical battery notification.
Chapter 6 Power management
If the computer is on while the battery is charging, the battery meter in the notification