well, by no means is it light. It's pretty heavy because the harddrive is pretty heave, and that plastic is THICK. It's a nice machine. I had a 170 and it was wonderful, but don't expect to get on the net with it. If you have seen the dilbert comic where dogbert said he invented the internet to see how long you can wait for nothing. He musta had that machine in mind for the client end

You would need to look around about the Re-Celling. You might want to check http://www.applefritter.com/main/. I think they have a walkthrough on how to do that. If not, google it. Be prepared to have to un-weld the batteries. iirc, they actually electrically welded the batteries together. You will probably need to go to someplace like battery patrol or something and have them get the cells built and what not. Should cost like around $40 if I am correct.

Have fun with the new machine! let us know if you do the battery redo and let us know what the battery time is with the newly re-celled batteries