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My MacBook's (late 2008, unibody, 13") battery has just become very bad. I also have a MacBook Pro (mid 2012, 15") which has a still-ok battery. Now, since I take my MacBook (the old one) everywhere I would like it to have a good battery life.

Can I swap the batteries of the two Macs? I saw that the battery of my old MacBook has 45Wh and the newer one has 77.5Wh, is that going to be a problem?

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  1. Will you even be able to fit the 15" MacBook Pro's battery into the 13" MacBook?
  2. Messing with power like this only result in broken things.

I highly recommend to get a new battery from Apple if it's still available. Or perhaps from a reliable third party.

  • 1. I think so, I haven't tried but it looked like it would fit... 2. Probably, right? Thats why I asked first. Thanks :) – LinusGeffarth Apr 25 '15 at 19:21
  • @LinusG. I still don't recommend it. You're dealing with 2 completely different models from different years (4 years apart). Edit: yup on 2. This will break things. I don't want you ending up with a broken laptop. – user123449 Apr 25 '15 at 19:22

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