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Use this guide to replace a worn-out battery. If your battery is swollen, take appropriate precautions.

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  1. Remove the following ten screws:
    • Remove the following ten screws:

    • Three 14.4 mm Phillips #00 screws

    • Three 3.5 mm Phillips #00 screws

    • Four 3.5 mm shouldered Phillips #00 screws

    • When replacing the small screws, align them perpendicular to the slight curvature of the case (they don't go straight down).

    How much weight can I save by removing the optical drive?

    gunes314 - crwdns2853112:0crwdne2853112:0

    You can save a lot of weight if lets say your installing a solid state drive or putting in a second hard drive but if you know that you use the CD/DVD disc drive a lot then you might just want to leave the drive alone.

    Marshall WahlstromHelgren -

    Tip: Use one of those weekday pill holders to have a cheep way to store screws you remove and each day of the week can be for different sizes or parts. It has been handy to have (much less expensive than the magnetic mat.

    Robert Wacker - crwdns2853112:0crwdne2853112:0

    Hello, where can I buy the screws I need in case I lose one of them?

    taylornya - crwdns2853112:0crwdne2853112:0

    I have one stripped screw... How opening without drill it?! Any suggestions please?

    rodrigosady - crwdns2853112:0crwdne2853112:0

    I also stripped a couple screws. I wasn’t able to open it up without drilling. After drilling the heads and removing the cover it was easy to hacksaw the tip and unscrew with a standard driver.

    Michael Wilkens -

    My top tip - make sure you buy good quality Phillips screwdrivers and a magnetic holder. Cheap screwdrivers won’t get the screws undone safely. Without a magnetic holder you have no chance of getting the tiny crews in and out safely.

    jeremyyoung - crwdns2853112:0crwdne2853112:0

    A good Phillips 00 is your friend here. Also, when reinserting the screws, gently start anticlockwise and you wil feel a click at the start of the thread. This tells you you’re in the right place and less likely to cross-thread through force in the wrong place.

    Iain Boyd - crwdns2853112:0crwdne2853112:0

  2. Use your fingers to pry the lower case away from the body of the MacBook near the vent. Remove the lower case.
    • Use your fingers to pry the lower case away from the body of the MacBook near the vent.

    • Remove the lower case.

  3. Use the edge of a spudger to pry the battery connector upwards from its socket on the logic board. It is useful to pry upward on both short sides of the connector to "walk" it out of its socket. Be careful with the corners of the connectors, they can be easily broken off.
    • Use the edge of a spudger to pry the battery connector upwards from its socket on the logic board.

    • It is useful to pry upward on both short sides of the connector to "walk" it out of its socket. Be careful with the corners of the connectors, they can be easily broken off.

    Is this step of removing the battery connector required?

    manodh - crwdns2853112:0crwdne2853112:0

    yes - as with disassembly of any electronic component you have to remove any power source. You don't want to accidentally turn the Mac on

    khull -

    Prying the battery connector off does not take much force. I did exactly what the guide suggested (walked it off back and forth) with the spudger without any problems. Just be very gentle, much like with anything inside laptops, they are very fragile and need to be worked with carefully. A+ instructions, battery replacement was a success.

    aekinaka - crwdns2853112:0crwdne2853112:0

    Be patient on disconnecting this one. It worked for me step by step, little by little.

    Phil Wagner - crwdns2853112:0crwdne2853112:0

  4. Bend the battery cable slightly away from its socket on the logic board so it does not accidentally connect itself while you work.
    • Bend the battery cable slightly away from its socket on the logic board so it does not accidentally connect itself while you work.

    I put some tape between the connector and socket while working on the drive.

    Stephen Smith - crwdns2853112:0crwdne2853112:0

    That's a good tip

    Anrothan -

    Great tip, I did that too

    Ahmed Mahran -

    One other note: The screw heads fit flush with the curvature of the case -- which means that they aren't exactly horizontal. In other words, they aren't perpendicular to the table that the computer is resting on. Don't try to force them straight in vertically, because you'll risk cross-threading them. (nearly ruined one screw hole myself!)

    lelandjordon - crwdns2853112:0crwdne2853112:0

    On my MacBook Pro, the connector seems to be an integral part of the battery.

    Jerry South - crwdns2853112:0crwdne2853112:0

  5. Remove the following two screws:
    • Remove the following two screws:

    • One 5.6 mm Tri-point screw

    • One 13 mm Tri-point screw

    Something isn’t right here. On my MacBook Pro, the connector is an integral part of the battery.

    Jerry South - crwdns2853112:0crwdne2853112:0

    Verify that this is the correct guide for your specific model—if not, we’ve got guides for all the other models, too.

    Jeff Suovanen -

    And which Apple “Genius” decided that a tri-wing screw would be just perfect for the job of holding the batter in place? Not smart for a genius.

    Jerry South - crwdns2853112:0crwdne2853112:0

    These tri-point screws are Y0 size. You’re welcome :)

    Rossi Macri - crwdns2853112:0crwdne2853112:0

  6. Carefully peel the battery warning label off the upper case between the battery and the optical drive.
    • Carefully peel the battery warning label off the upper case between the battery and the optical drive.

    • Do not remove the label from the battery.

    What is the reasoning behind not removing the label from the (old) battery?

    tom - crwdns2853112:0crwdne2853112:0

    Probably to help you remove it? Not sure, but I used it along with the clear tab to pull the battery out. Worked pretty good.

    aitorrecalde -

  7. Use the attached plastic pull tab to remove the battery from the upper case.
    • Use the attached plastic pull tab to remove the battery from the upper case.

    • If you're installing a new battery, you should calibrate it after installation:

    • Charge it to 100%, and then keep charging it for at least 2 more hours. Next, unplug and use it normally to drain the battery. When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery. Wait at least 5 hours, then charge your laptop uninterrupted to 100%.

    • If you notice any unusual behavior or problems after installing your new battery, you may need to reset your MacBook's SMC.

    My replacement battery came with a clear protective film that should be removed before installation. Be sure not to overlook the film on the bottom of the battery as it covers only a portion of that side and might be easy to overlook.

    Do not over-tighten the bolts holding the battery in place. One of the tabs on the original battery was broken, presumably due to over-tightening.

    Patrick Langvardt - crwdns2853112:0crwdne2853112:0

    The calibration suggestion given in this guide differs a bit from what iFIXIT sent with the battery. What came with the battery went like this…

    For optimal performance, calibrate your newly installed battery. Drain battery below 10%, then charge it uninterrupted to 100%.

    Daniel Lavelle - crwdns2853112:0crwdne2853112:0

    I recommend disregarding those instructions and following the steps in this article:

    1. Charge it to 100%, and keep charging it for at least two more hours.

    2. Unplug your laptop and use it normally to drain the battery.

    3. Save your work when you see the low battery warning.

    4. Keep your laptop on until it goes to sleep due to low battery.

    5. Wait at least five hours, then charge your laptop uninterrupted to 100%.

    Sam Omiotek -

    would it be dangerous to use the macbook without a battery in the meantime?

    724 F - crwdns2853112:0crwdne2853112:0

    It’s not dangerous (assuming you have put the back cover back on), though the computer will run slower. The charging assembly cannot supply as much amperage as the battery, so the processor will be throttled.

    Sam Omiotek -

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To reassemble your device, follow these instructions in reverse order.

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Phillip Takahashi

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Many thanks to Phillip and the other contributors who put this guide together. My late 2011 MacBook Battery was headed downhill fast. Having used IFixit before, I headed back to the site and found the parts and help that I needed. My new battery arrived two days after placing the order and I went to work. Everything went smooth as silk(again thanks to some IFixit tools, etc.)and I was up and running in no time. Thanks for this great site and for encouraging do-it-yourself repairs with great guides. Hooray to all who like to fix things and boo to manufacturer who design products that make this difficult. Cheers and keep up the great work. Lowell Allen, May 26.

lowellallen2433 - crwdns2853112:0crwdne2853112:0

Thanks a lot, was great help and needed this greatly for one of my macbook.

Best regards from,

http://www.handymandream.com/

Handyman Dream - crwdns2853112:0crwdne2853112:0

Replacing the original battery was easy, but the replacement battery loses a charge very fast.

20 minutes, I’ve lost 11% charge.

Alex - crwdns2853112:0crwdne2853112:0

Thx a lot to everyone at iFixit, now my MacBook Pro Unibody Late 2011 can take a second breath

Franck Bourgeois - crwdns2853112:0crwdne2853112:0

Thanks for the easy to follow instructions! My battery install kit did not come with a spudger, so I used a plastic knife and my finger nails. I was careful to make sure the little seated edges didn’t break off (that’s when I transitioned to my nails).

Christi Ruby - crwdns2853112:0crwdne2853112:0

Having never done this before it was remarkably easy to do following the very clear instructions., the tool kit I ordered that came with the battery was perfect so pleased I ordered that as well. I was warned it would take up to 2 weeks to deliver to UK from Stuttgart but they shipped it right away and arrived with Fedex within a week, great service!

Tip.I made a diagram on a piece of paper of where all the different screws went and laid them on the paper so was easy to replace them in the right place.

Feel so good I have saved a visit to the computer repair shop, thank you so much :))))

Lesley - crwdns2853112:0crwdne2853112:0

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