The Mac Observer

Skip navigational links

You're viewing an article in TMO's historic archive vault. Here, we've preserved the comments and how the site looked along with the article. Use this link to view the article on our current site:
Squeeze More Life Out of Your 'Book Battery

TMO Quick Tip - Squeeze More Life Out of Your 'Book Battery

by , 7:30 AM EDT, July 17th, 2006

I just love that I can take my PowerBook anywhere and work. I just hate that the battery doesn't last forever. There are ways to extend the limited battery life all laptops exhibit, which is really great - especially since I'm sitting on a bench in Estes Park, Colorado writing today's Quick Tip. Here's some things you can do to increase your 'Book's battery life when electrical outlets aren't an option:

Turn off AirPort If you don't have a Wi-Fi network in range, save some juice by shutting off your AirPort card. Click the AirPort icon in your menu bar, and then choose Turn AirPort Off.

Turn off Bluetooth Just like AirPort, Bluetooth can cut into your battery run time. To shut off Bluetooth, click the Bluetooth icon in your menu bar, and then select Turn Bluetooth Off.

Change your display to grayscale The more colors you display, the more processing power it takes to render the windows, icons and animations you see on your screen. Changing from color to gray scale can help squeeze a little more juice out of your battery.

  • Choose Apple menu > System Preferences, and then click Universal Access.
  • Click the Seeing tab.
  • Check Use grayscale.


Universal Access lets you change your display from color to grayscale.

Turn down your display's brightness Turning down the brightness on your display certainly will help with battery life, but if you are working outside, it will probably be too difficult to see your screen.

Quit Applications that you aren't using An application can use your processor, even if you aren't using the application. That means more electricity wasted. Quit programs you don't need to use.

Another great way to extend the battery life in your PowerBook, iBook, MacBook, or MacBook Pro is to leave the lid closed. Even though I'm sitting in the mountains writing, rest assured I'll be taking my own advice and packing my laptop away as soon as I finish today's tip.


if you have ideas for Mac related tips that you think other TMO readers might find helpful.

Recent TMO Headlines - Updated February 20th

Sun, 12:16 PM
Don't Fear The Wi-Fi – Mac Geek Gab 645
Sat, 3:47 AM
Apple Answers Tweets in 4 New iPad Pro Ads
Fri, 10:24 PM
WWDC in San Jose Is Closer and Other Apple Insights
Fri, 6:58 PM
AT&T, Sprint, T-Mobile and Verizon Unlimited Data Plan Comparison
Fri, 6:25 PM
Get Free Bitcoins from 11 Faucets That (Still) Pay
Fri, 6:16 PM
iPhone Prototypes Must Be Carried In A Special Case
Fri, 4:59 PM
Apple, Let Us Tune into Those FM Radio Channels
Fri, 4:48 PM
iPhone 8: Goodbye Home Button, Hello Function Area
Fri, 4:38 PM
Amazon is Just Getting Started With Alexa/Echo
Fri, 1:49 PM
iPhone 8 Biometric Sensors, FCC and Smartphone Radio Chips - TMO Daily Observations 2017-02-17
Fri, 12:05 PM
ExoMount Touch Air Vent Car Mount: $16.99
Fri, 9:08 AM
Getting Two-Factor Verification Codes for Your Apple ID
  • __________
  • Buy Stuff, Support TMO!
  • Podcast: Mac Geek Gab
  • Podcast: Apple Weekly Report
  • TMO on Twitter!