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  1. #1
    Great Tip to save Powerbook battery life!

    Member Since
    Aug 27, 2005
    Posts
    129
    Great Tip to save Powerbook battery life!
    Doing this trick will give you an extra 20-30 minutes of battery life on your powerbook. Hold down Control/Option/Command and then press 8. It inverts your screen. It also makes it easier to read in direct sunlight. To switch it back, just hit the shortcut again.

  2. #2
    Great Tip to save Powerbook battery life!
    jhelm007's Avatar
    Member Since
    Oct 18, 2004
    Location
    Norfolk, VA, USA
    Posts
    629
    Specs:
    MacBook: 2GHz, 2GB RAM, 120GB HD; PowerTower Pro (300MHz G3 clone): 608MB RAM, 10GB HD
    Quote Originally Posted by Mactheknife
    Doing this trick will give you an extra 20-30 minutes of battery life on your powerbook. Hold down Control/Option/Command and then press 8. It inverts your screen. It also makes it easier to read in direct sunlight. To switch it back, just hit the shortcut again.
    how does that save battery life? the backlight is still on.

  3. #3
    Great Tip to save Powerbook battery life!
    Murlyn's Avatar
    Member Since
    Jun 11, 2003
    Location
    Mount Vernon, WA
    Posts
    4,915
    Specs:
    MacBook Pro 2.6 GHz Core 2 Duo 4GB RAM OS 10.5.2
    I think because more of it is dark than light.. so not as many pixels have to be on in such full force.. I've seen this tip a couple of times and everybody swears it works.. I haven't tested it, but theoretically it should definitely work.

  4. #4
    Great Tip to save Powerbook battery life!

    Member Since
    Aug 27, 2005
    Posts
    129
    Yes, I have tested it and does in fact work. I gained about 35 extra minutes of battery life using this method. What you said above Murlyn seems to be why. Not nearly as many pixels have to be at full strength which increases the battery power.

  5. #5
    menace3054
    Guest
    lol, im going to do this to my girlfriends pb when she gets home, shell freak

  6. #6
    Great Tip to save Powerbook battery life!
    iWhat's Avatar
    Member Since
    Nov 11, 2004
    Location
    Toledo, Ohio
    Posts
    5,736
    Specs:
    Macbook, iMac G5, iPad, iPhone 4, iPod (MANY)!
    Hrm, that's a great idea come to think of it. Thank ya! But I have more of a problem seeing my screen in sunlight, so it's a win win.

  7. #7
    Great Tip to save Powerbook battery life!
    randomfactor's Avatar
    Member Since
    Oct 07, 2005
    Location
    Around London
    Posts
    233
    Specs:
    MacBook Pro 17" i7 Unibody, HK Speakers and a Wacom A5 Wide tablet
    does anyone know any other stuff like inverting the screen on the Powerbook?
    Man Fears Time but Time Fears the Pyramids

  8. #8
    Great Tip to save Powerbook battery life!
    WasabiTaylor's Avatar
    Member Since
    Apr 29, 2005
    Location
    MA
    Posts
    251
    Specs:
    iMac G5 20", 250gb, 512mb, Airport/Bluetooth, wireless kb+mouse
    Aside from battery life, that tip is just plain fun. I went through my iPhoto library with it. It makes all of my pictures look like they're CG or something. I love it.

  9. #9
    thoughtCoat
    Guest
    Awesome! Works on my Mini as well. This is a cool trick, thanks for sharing it.

  10. #10
    DigitalN.
    Guest
    or for some more fun, go into the system preferences, have this on, hit greyscale, and crank the contrast

  11. #11
    Great Tip to save Powerbook battery life!
    Mr Sprout's Avatar
    Member Since
    Apr 26, 2005
    Posts
    105
    Woaaaah this looks cool....

  12. #12
    SErgini0
    Guest
    fantastic; saved 40minutes on a train trip the other yesterday! Brilliant!

  13. #13
    Great Tip to save Powerbook battery life!
    jram's Avatar
    Member Since
    Apr 08, 2005
    Posts
    472
    That is a great tip, heres a better one lol Bring your adapter and surge protector and plug it in. Trains I go on have plugs..

  14. #14
    jenn
    Guest
    Excellent. Is there any list of all these secret command strokes? I love em!! :girl:

  15. #15
    Great Tip to save Powerbook battery life!

    Member Since
    Nov 24, 2005
    Posts
    749
    Specs:
    Powerbook G4/ 15.2"/ 1.67 ghz/ 2 gb RAM/ ATI Mobility Radeon 9700 (128 mb RAM)/ 100 gb hdd@ 5400 RPM
    Nice! Can't wait to do this, throw on some Hendrix and then smoke some- err... ya, play some Hendrix and watch this...
    I'd use Windows... but I like the Mac OS more.

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