Can I Extend My Laptop Battery Run Time?
The short answer: yes, sometimes.
A new laptop battery typically provides between 1.5 and 3.5 hours of runtime,
depending on the applications you are using. Power-intensive functions will
drain your battery more quickly.
You can extend battery runtime by reducing the two largest power draws:
screen brightness and optical drive usage (CD/DVD).
Battery life can also be improved by adjusting the power management settings
within your operating system.
Windows users: Go to Control Panel > Power Options to adjust
power usage and low-battery alerts. Lowering screen brightness can significantly
extend battery life. Reducing CD/DVD usage will also help.
Mac users: Go to System Settings > Energy Saver to adjust
graphics, screen, disk, and sleep settings to improve battery performance.