Simple thoughts in a complex life
Snow Leopard Unibody MacBook Pro Battery Life Test
Apparently, 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 :
- Real-world usage test.
- The Apple Environment test.
- Format and do a clean install of Snow Leopard.
- Repeat item #1.
- Repeat item #2.
- 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.