View Full Version : I get 3 hours max battery life on my 11" 2011 Air, just surfing

Oct 15, 2011, 11:37 AM
with half brightness...
I love this computer but the battery life is really disappointing :/

Oct 15, 2011, 11:45 AM
Are you using Safari and Click to Flash?

Oct 15, 2011, 11:46 AM
Have a look at Activity Monitor (Applications / Utilities /) and select All Processes and sort by CPU to see what the culprit may be.
Also check the "System Memory" tab to see what your "Page ins:", "Page outs:" and "Swap used:" are.

image below uses sorting by CPU as an example
Further reading:
Mac OS X: Reading system memory usage in Activity Monitor (http://support.apple.com/kb/ht1342)
Making The Most of Activity Monitor (http://mac.appstorm.net/how-to/os-x/making-the-most-of-activity-monitor/)
What Is Activity Monitor (or How to Take Your Mac's Pulse) (http://oreilly.com/pub/a/mac/2005/10/04/activity-monitor.html)

Adobe Flash Player is CPU intensive, thus more power is needed to feed the CPU, which results in higher temperatures and often higher fan speed(s) on mobile computers. As more power is used due to Flash, the battery life of mobile computers is shortened by a good bit.
To check, if Adobe Flash Player is responsible for less battery time, go to Applications / Utilities / Activity Monitor and select to show ALL PROCESSES and sort by CPU.

There are a variety of Flash blockers for all the four major browsers available.
A Flash blocker does what it says, it blocks Flash content, but via a click on the marked Flash object, the Flash object can be activated and used.

Safari: ClickToFlash (http://hoyois.github.com/safariextensions/clicktoplugin/), for which there is an extension and a plug-in; CTF allows you to download YouTube and other kinds of MPEG-4 encoded video too.
Opera: has a built-in Flash blocker
Firefox: Flashblock (https://addons.mozilla.org/en-US/firefox/addon/flashblock/) is an add-on to block Flash
Chrome: FlashBlock (http://www.chromeextensions.org/appearance-functioning/flashblock/) is an extension to block Flash

Also make sure to have the latest Adobe Flash Player version running, you can get it here (http://get.adobe.com/flashplayer/otherversions/).

Oct 15, 2011, 12:12 PM

hah great answer!