Microsoft W840DI - Manual (Page 35)

User's Guide Battery
2.4 Battery Maintenance
To maintain the battery pack's maximum capacity, you should occasionally let the
notebook deplete its battery power completely before recharging.
To carry out a complete depletion of the battery, disconnect the AC adapter and let your
notebook consume the remaining battery power. To speed up the depletion, use the HDD
as much as possible, and the LCD should be set as bright as possible. When the battery is
empty, wait for the notebook to cool down (especially the battery). The temperature should
be within 15-25
°C (59-77°F). Then insert the AC adapter to recharge the battery.
2.5 Power Consumption
The Windows™ operating system has incorporated the latest state-of-the-art ACPI
(Advanced Configuration Power Interface) power management methodology. In order to
fully utilize the power of your battery packs, it would be a good idea for you to spend
sometime to acquire a basic understanding of the power management concept from your
operating system.
In Windows™ Operating Systems, you can go through Power Options of the Control
Panel according to the version of Windows™ Operating System the notebook applies.
We shall not describe them in details.
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