Determining the price of a MacBook battery replacement does start with your MacBooks model year. Contrary to what you may have read on most tech websites, all MacBook batteries are replaceable. Whether or not you can do it yourself depends on the year of your MacBook. Most MacBooks Pros built before the middle of 2012 were fairly easy to replace. MacBook Pros built prior to the middle of 2012 were secured with a few screws. MacBook Pros built after 2012 were secured with industrial grade aerospace adhesive that requires heat, solvents and lots of courage to remove.