Extend your battery life.

Save your keyboard and screen.

Keep it cool.

Work offline.

Secure your data.

Carry it well.

Back up when you get home.

Pack some helpful extras.

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When traveling (with a laptop):

106. Refrain from packing non-essential items or extra gadgets.
107. Avoid working on the hotel bed or at a high table.
108. Use a small pillow to support your lower back in the car/on the plane.
109. Carry the laptop in a backpack instead of a shoulder or handbag.
110. If you must use the laptop without external devices and monitor stand, it is best used in your lap (as it was designed!) or on a worksurface no higher than 27".
111. Support your feet with a portable footrest.

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1. Ruggedized Laptops

2. Careful Storage

3. Let It Warm Up

4. Incorrect Warming Methods

5. Laptop Warmers

6. Excessive Heat Build-Up

7. Protecting Your Display

8. Stay Out of the Cold

9. Change Power Setting

10. Don't Get Creative

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1. Calibrate your battery
2. Adjust your settings
3. Buy the Right Processor
4. Only run programs you need
5. Dim your screen
6. Disable unnecessary programs
7. Keep operating temps down
8. Don't watch DVDs or play games
9. Limit external devices
10. Don't standby, hibernate
11. Clean battery contacts
12. Use the battery
13. Don't leave it in sunlight
14. Turn off wireless and Bluetooth
15. Decrease hard drive activity
16. Avoid using the CD/DVD player
17. Be picky with software
18. Less is more
19. Turn off speakers
20. Carry a spare device or battery

Source: 20-tips-to-get-more-juice-from-your-laptop-battery