Does DRM Really Suck the Life of Batteries? — CNet Test Flawed
An experiment by CNet to see whether copy-protected music files sucked the life out of player’s batteries is interesting but flawed.
According to CNet, DRM copy-protected music can decrease battery life by up to 25 percent thanks to the processing overhead necessary to play them.
But as one commentator on the story points out, the test compared protected WMA files with unprotected MP3 files. It should have compared protected-WMA to unprotected WMA, or Apple’s FairPlay AAC versus unprotected AAC.
Leander Kahney is the editor and publisher of Cult of Mac, and author of three books about technology culture: 
