[eyes on me]

isnt it suppose to be 6hour battery? and it take longer to charge. any advice how it will last long. try to update it but nothing happen. thank u

[SupahCoolX]

First, companies typically overstate battery life. They generally test how long is lasts just sitting there doing little/nothing, not real-world usage.
Second, many things (frequent hard drive usage, processor-intensive tasks, networking, etc) can reduce battery life. The more you do, the short the battery will last.
See this article for more info/tips:
http://docs.info.apple.com/article.html?artnum=50666

[Detrius]

Originally posted by eyes on me:
isnt it suppose to be 6hour battery? and it take longer to charge. any advice how it will last long. try to update it but nothing happen. thank u

It's 'up to 6 hours' not '6 hours of real-world battery life.'

A new battery will realistically get you three to four hours, depending on usage and model.

As the battery gets older, it will eventually dwindle down to nothing.

[ginoledesma]

My iBook averages about 4-4.5 hours of battery life, 5 on a very good day (doing nothing, mostly). I regularly surf, chat, email, and program.

Also, using peripherals can drain the battery, too, like Airport. Prior to having Airport Extreme, I could get 4.5-5 hours on average. With both the mouse and external USB hard drive plugged in, I only get about 3.5 hours of use.