Battery Packs and Power Management 
To Recharge the Battery Pack
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CAUTION: The AC adapter is normally warm when plugged into an 
AC outlet. The notebook is normally warm while recharging. Do not 
recharge the notebook in a briefcase or other confined space, or the 
battery pack could overheat. 
»  Plug the AC adapter into the notebook. 
Charging can take several hours. If you continue working while 
the battery pack charges, the charging time may increase. 
The operating time for a fully charged battery pack depends 
on the notebook model, power management settings, and level 
of use. 
To Get the Most from Your Battery Packs 
Follow these suggestions to make your battery power last as long 
as possible: 
■ Plug in the AC adapter, especially when using a CD-ROM 
or DVD-ROM drive, or any external connections such as a 
PC Card or a modem. 
■ Set the display brightness to the lowest comfortable level 
(
Fn+F1). 
■ Put the notebook in Standby when you will not be using it for 
a short while. 
■ Put the notebook in Hibernation whenever you want to save 
your current session but will not be using the notebook for 
a day or more. 
■ Set the automatic timeout settings to emphasize saving 
power. If your notebook has a multispeed processor, use the 
lower speed on battery power (the default settings conserve 
battery power). 
Startup Guide 3–3