Unibody MacBook Pro models with 13" displays produced from 2009-2012.

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new battery with short life

My new battery only provides 3-4 hours of working time. When this Macbook was new, 5-7 hours was normal. Do I have a defective battery?

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Did you do a SMC reset and the cycle the battery at least two times?

Here's the full story: How to Calibrate a Laptop Battery on a Macbook

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No, didn't know about those tricks. Will have to try.

What is SMC reset? Thanks for your response.

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Where did you get the battery from? If it was iFixit, duds are unusual but you probably got one. If if it was from a 3rd party, you might want to steer clear of those.

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Yes, it came from iFixit. Guess I need to try the battery calibration trick. Thanks for your response.

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No problem! More than happy to help!

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