This laptop freezes when switching to battery mode or booting the system with just the battery. As somewhat of a fix you need to use the nolapic boot option, this will allow you to use the battery but will also disable one of the cores on the processor.
As root, edit your /boot/grub/menu.lst file with your favourite text editor and append nolapic to the end of your kernel line. It should look something like this:
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linux cant work with wifi… so win wins…