I recently bought Macbook Pro from year 2006. No hard disk and charger inlcuded. I installed 500GB Samsung drive and bought cheap Chinese charger. The machine says the battery should be replaced. The machine has shut down unexpectedly couple times and I suspect its the battery since now I have been running on this for some time (YouTube actually playing in background when I type this) without it at all. Has anyone here had battery causing this kind of behaviour? The battery is original Apple one and it does hold some charge but maybe it is faulty? The machine has shut off twice when powered only by the battery and once when charger was hooked and battery charging. Now the machine atleast seems to run fine with only charger. I paid 60USD inlcuding shipping. It has 2GHz Core Duo and 2gigs of RAM, external condition great, haven't tested SuperDrive. Is it worth getting new battery and when you count the value of HDD and charger (I paid something like 32USD for HDD and 25USD for charger), what do you think? OS X support is gone long time ago.