Hi everyone. I am going be ordering my second mac on Saturday next week, had my Mac Mini close to a year now and have fallen in love with OSX. Im ordering a budget Macbook (the 2.00ghz no superdrive one), being a 17 year old student who only writes Ruby code/makes websites its more than enough for my needs and doesn't break the bank, which is nice. On to my question, has anyone ever tried a 3rd party battery in their laptop? Ive seen a few on eBay and cant decide if I should part with £50 to try one out. I would really like a 2nd battery is just they are so darn expensive. If their any good id really rather buy two 3rd party batteries for the price of the Apple one. Is there any dire reason that I shouldnt be messing about with 3rd party batteries? Does this void my 1 year complimentary warranty in anyway? Thanks ever so much reading this and I look forward to reading replies.