Mark Krueger

Q: New 2015 MacBook showing 4844 mAh at full charge.

I love my new 2015 MacBook; but I'm concerned I may have a defective battery. My model is the BTO 1.3Ghz model with 512GB (top available). According to what I've read, the battery should be 5263 mAh. After only 14 cycles mine shows max charge of 4844 mAh. That's about 8% off I believe.

 

I'm not complaining about its battery performance, as it is adequate for my needs. I just wonder if I should be taking it in to be looked at. I'd hate for it to have a bad cell or something that might suddenly get worse while traveling.

 

What do you all think? What Full Charge Capacity are you seeing on yours in System Profiler (About This Mac -> More Info -> Power) ? Maybe I just had the bad luck of getting a slightly low mAh battery and I should just ignore it?

MacBook, OS X Yosemite (10.10.3), 1.3Ghz 512GB SSD 8GB RAM

Posted on May 22, 2015 8:48 PM

Close

Q: New 2015 MacBook showing 4844 mAh at full charge.

  • All replies
  • Helpful answers

  • by K Shaffer,Apple recommended

    K Shaffer K Shaffer May 23, 2015 1:07 AM in response to Mark Krueger
    Level 6 (14,424 points)
    Desktops
    May 23, 2015 1:07 AM in response to Mark Krueger

    There are some general bits of information to read through and see how they apply to your

    computer situation, and configuration of software + hardware specification...

     

    •Mac notebooks: All about batteries - Apple Support

     

    Battery life expectation can vary with conditional use, situations, and personal preferences.

     

    •MacBook (Retina 12-inch, Early 2015) - Technical Specifications

     

    Hopefully the unit will see some increase in battery life, depending on load factors, temperature

    and other use factor including environmental; however if the unit is relatively new, you may seek

    the advice of an authorized Apple trained specialist or at least see if the Apple Store genius can

    look into it to see if there's an indication of an issue. Slight difference between your experience

    & a stated higher battery life could be accounted for in how the computer is used, & where.

     

    In any event...

    Good luck & happy computing!

  • by Mark Krueger,

    Mark Krueger Mark Krueger May 28, 2015 7:13 PM in response to K Shaffer
    Level 1 (31 points)
    May 28, 2015 7:13 PM in response to K Shaffer

    I have good news. 4844 mAh was the lowest I ever saw at 14 cycles. It went up to 4943 the next cycle, then 4963, and finally I’m now showing 5001 at cycle 17.

  • by gatesbuster,

    gatesbuster gatesbuster Dec 6, 2015 3:15 AM in response to Mark Krueger
    Level 1 (4 points)
    iPhone
    Dec 6, 2015 3:15 AM in response to Mark Krueger

    my battery is at 4954 mah after 20 cycles. Not going up but still going down. Poor battery life even though it shows normal; absolutely unacceptable that it decreases so fast

  • by anamatopeya,

    anamatopeya anamatopeya Jan 5, 2016 11:55 AM in response to Mark Krueger
    Level 1 (0 points)
    Jan 5, 2016 11:55 AM in response to Mark Krueger

    hello! I just bought my macbook pro retina 13' last week and its full charge capacity also dropped like yours after 6 cycles! reading your post gave me hope these values might increase again overtime! could you give me any tips that might help? I'm quite worried and don't know if I should be taking it into apple.  thank you!

  • by goldsteinsa,

    goldsteinsa goldsteinsa Jan 23, 2016 4:43 AM in response to Mark Krueger
    Level 1 (0 points)
    Jan 23, 2016 4:43 AM in response to Mark Krueger

    2015 Retina Macbook here (12") - the battery capacity is a bit over 91% after 9 cycles.  Not good.