Recommendations for a good battery??

[ccookie66]

Hello, I will be starting high school this fall, and I want to bring my ThinkPad with me. The only problem is that the battery only lasts about 30 minutes. I need it to last all day. (school day, and it won't be on contently). I don't know much about 6 cell, 9 cell and all that. I think 9 cell has the longest time. Not sure thought.

[mbarker]

I had a similar question, see here:

http://forum.thinkpads.com/viewtopic.php?f=2&t=94731

pjk's reply (the second post) is good stuff.

BTW, to last "all day" you're going to need multiple batteries.