Avee's Place

Simple thoughts in a complex life

Snow Leopard Unibody MacBook Pro Battery Life Test

up to 7 hrs of wireless productivityApparently, my post about my suggestion on fixing the battery life problem in Snow Leopard has been generating enough traffic to make me feel compelled to do a battery life test. So here goes.

First, a short description of my machine :

  • It is a 13″ MacBook Pro, with 2.26 GHz processor and 2 GB of RAM. Logically, faster processor would consume more power for a given time and the same applies to larger amount of RAM.
  • I upgraded to Snow Leopard via the upgrade path, as advised by Apple (I read this on gizmodo.com).
  • It had all sorts of programs installed, the Applications folder had 70+ items and I also installed programs that runs as a service like SynergyKM, Growl.

I think this machine qualifies for a real world test machine.

The target of this experiment is to try to verify Apple’s claim about the notebook’s battery life, and to compare it to real-world usage scenarios. Apple claims that the battery would last up to 7 hours of “wireless productivity” (8 in 17″ MBPs). As usual, in every claim there’s the fine print. You can see in this page, in the fine print, 7 hours is achieved in a specific working condition. The keywords are in bold.

13-inch MacBook Pro testing conducted by Apple in May 2009 using preproduction 2.53GHz Intel Core 2 Duo-based MacBook Pro units. 15-inch MacBook Pro testing conducted by Apple in May 2009 using preproduction 2.8GHz Intel Core 2 Duo-based MacBook Pro units with a Better Battery Life setting. 17-inch MacBook Pro testing conducted by Apple in May 2009 using preproduction 2.8GHz Intel Core 2 Duo-based MacBook Pro units with a Better Battery Life setting. Battery life depends on configuration and use. See www.apple.com/batteries for more information. The wireless productivity test measures battery life by wirelessly browsing various websites and editing text in a word processing document with display brightness set to 50%.

There are several experiments that I plan to do. In order :

  1. Real-world usage test.
  2. The Apple Environment test.
  3. Format and do a clean install of Snow Leopard.
  4. Repeat item #1.
  5. Repeat item #2.
  6. Write a conclusion.

For anyone interested, I will update this post with links to each item, and I will try to do at least one test in a week.

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One response to “Snow Leopard Unibody MacBook Pro Battery Life Test

  1. Pingback: Fixing Snow Leopard Unibody MacBook Pro Battery Life Problems « Avee's Place

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