To respond to a low-battery warning

Note

CAUTION

Batteries and Power Management

Using Battery Power

The notebook automatically alerts you when the battery power drops to a critically low level. The notebook first emits a high-pitched beep or displays a warning message. Then, if you do not restore power within a short time, the notebook goes into Hibernation.

After the notebook enters Hibernation in this way, you will not be able to turn it on again until you restore power by doing one of the following procedures:

•Replace the battery with a charged one.

•Plug in the AC adapter.

If you plug in the AC adapter, you can continue to work while your battery recharges.

To recharge the battery

The AC adapter is normally warm whenever 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 could overheat.

Plug the AC adapter into the notebook.

To get the longest operating time, wait until the battery charge is below 50 percent before recharging, then charge it fully (100 percent). Charging can take several hours. If you continue working while the battery charges, the charging time may increase.

The operating time for a fully charged battery depends on the notebook model, power management settings, and level of use.

To get the most from your batteries

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 drive, or any external connections such as a PC Card or a modem.

•Set the display brightness to the lowest comfortable level (Fn+F1).

Reference Guide 33

2547EA, 2552AI, 2541AH, 2543AH, 2542EA specifications

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