Laptop User Manual

User’s Manual 5-1

NB500/NB505/NB520/NB525/NB550D/NB555D Series

Chapter 5

Power and Power-Up Modes

The computer's power resources include the AC adaptor, battery pack and

any internal batteries. This chapter provides details on making the most

effective use of these resources, and includes information on charging and

changing batteries, tips for saving battery power, and information on the

different power-up modes.

Power conditions

The computer's operating capability and battery charge status are affected

by different power conditions, including whether an AC adaptor is

connected, whether a battery pack is installed and what the charge level is

for that battery.

The LED in the table below refers to the DC IN/Battery indicator.

Power on Power off

(no operation)

AC adaptor

connected

Battery fully

charged

• Operates

• No charge

• LED: green

• No charge

• LED: green

Battery partially

charged or no

charge

• Operates

• Charge

• LED: amber

• Quick charge

• LED: amber

No battery

installed

• Operates

• No charge

• LED: off

• No charge

• LED: off