I bought my PB second hand from a friend. It is about 1.5 years old now (I think, any way for me to tell exactly?). The battery gets about 2 hours from a full charge. I think he used his battery fairly extensively, and I can see that getting a new battery in the future is a likelihood for me. Which PBs have keyboards that light up? I've never seen mine light up, so I'm assuming it's not this one. It's a FireWire 800 1Ghz Al. Jean-Paul > As I mentioned in another post, this is my first pb and I haven't had > any other experience with pb's to go on. This fact lead to a pleasant > surprise when my keyboard lit up the first time. I thought I had > pressed a button by accident and tried a million ways to make it light > up again (it went out immediately after). After a brief period of > panic I consulted my user manual and was enlightened - no pun intended > - the keyboard lights up in low light conditions! How convenient :) > While flipping through the manual I found the page on battery > calibration which told me to use the pb until the battery ran out and > the book went to sleep, then charge the battery to full.