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Power and Power-up Modes
The computer's power resources include the AC adaptor and internal
batteries. This chapter gives details on making the most effective use of
these resources including charging and changing batteries, tips for saving
battery power, and 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.
AC adaptor
Battery fully
connected
charged
Battery partially
charged or no
charge
No battery
installed
User's Manual
Power conditions
Power on
• Operates
• LED: Battery green
DC IN green
• Operates
• Quick Charge
• LED: Battery amber
DC IN green
• Operates
• No charge
• LED: Battery off
DC IN green
L550/L550D/L555/L555D
Chapter 6
Power off (no operation)
• LED: Battery green
DC IN green
• Quick charge
• LED: Battery amber
DC IN green
• No charge
• LED: Battery off
DC IN green
6-1
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