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Battery Power
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The battery’s Economy Mode (ECO) enabled:
Stop the battery recharging at 80% of fully charged. By stopping the battery recharging before 100% (fully charged), the
burden on the battery is reduced and deterioration is prevented, so the lifetime of battery pack will be extended. The com-
puter will not operate as long on the battery as when the battery’s Economy Mode (ECO) is disabled.
If you often use the computer with the AC adaptor connected, and if you want to prevent deterioration of the battery pack,
we recommend that you enable the battery’s Economy Mode (ECO).
Switching the battery’s Economy Mode (ECO)
1
Click
on the notification area.
2
Click [Enabled] or [Disabled] in [The battery’s Economy Mode (ECO)].
A
When the confirmation message is displayed, read the message on the screen carefully, and click [OK].
B
Use the computer with the AC adaptor unplugged until the remaining battery power is 80% or less.
When the remaining battery power falls to 80% or less, battery discharge ends, and the Economy Mode (ECO)
indicator lights.
If you continue using the computer with the AC adaptor, it may take about a day until the remaining battery
power falls to 80%.
C
When the confirmation message is displayed, read the message on the screen carefully, and click [OK].
D
Connect the AC adaptor.
If you do not click [OK] at step
C
, the computer will go into forced sleep after about three minutes to prevent the
remaining battery power from dropping.
• The computer will go into forced sleep even while application software is running or data is being sent or
received, or when the hard disk is being accessed, so be sure to connect the AC adaptor.
NOTE
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After disconnecting the battery pack, if you connect it to a computer on which the battery’s Economy Mode (ECO) set-
tings differ, the battery will either recharge or discharge until the next time the computer is turned on, giving priority to
the battery pack setting on that computer.
[Enabled]
[Disabled]
Remaining battery power:
81% or more.
Remaining battery power:
80% or less.
Economy Mode (ECO)
Indicator
Blink
(The battery will discharge
until the remaining battery
power is 80% or less.)
Light
off
