To all TiBook users!
I've been struggling with mediocre battery life on my TiBook/550 for a long time. The best I ever got was around 2.5 hrs, maybe 3 if I was only reading pdf files with reduced brightness. Then my battery started to die and I was only getting 25 minutes. Well, I just got the new higher capacity replacement battery from NewerTech. Wow, did it make a difference. I'm now getting 3.5-4 hrs routinely with full use. Web browsing, wordprocessing, downloading and saving. It's $140, but well worth it to me.