Linux, power management and laptop battery life
Sunday, March 11, 2007Ever since I’ve got new laptop last November, I was quite unhappy with its battery life. Initially it used to keep computer running for around 2.5 hours with usual workload (mail/www/docs), while Dell advertised up to 5 hours of work with that particular 6-cell battery model. After some time battery lost ~40% of its original capacity without any particular reason, and could hardly manage to get 1.5 hours of work away from AC adapter. Fortunately, Dell’s technical support arranged battery replacement. But new battery’s performance wasn’t much better (2-2.5 hours), so I’ve managed to get… another replacement. :) This time I’ve decided to investigate in details what is actually standing behind laptop’s battery life. (more…)