Laptop going into store next week for battery issue

Discussion in 'MacBook Pro' started by MBP*, Sep 29, 2017.

  1. MBP* macrumors member

    Joined:
    Jun 12, 2014
    #1
    One of the reasons I purchased an Apple notebook is due to the battery life, and 2.5 years on, somehow I have lost about 2 hours of use - where I got 6 hours a day, now I only get about 4 and a bit with the same usage. I also took out AppleCare for this reason.

    I know that battery depletes overtime, but with my AC running out in a months time and the downward trend of my battery capacity continue to decrease, I want to try to see if I can convince a Genius to replace my battery under the AC warranty.

    Can this be done, if so what arguments are best used in this situation?
     
  2. Billburns macrumors 6502

    Billburns

    Joined:
    Mar 27, 2017
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    Usa
    #2
    2.5 years? Batteries wear down

    I’m not sure if hey will really give you a new battery but doesn’t hurt to try
     
  3. leman macrumors G3

    Joined:
    Oct 14, 2008
    #3
    Batteries are subject to wear and tear, but Apple has some internal guidelines to determine whether the wear is unexpectedly high. A widely known criterion is "80%+ capacity for under 1000 cycles". That is, if your computer is still under warranty and your battery has less than 1000 cycles , it should have 80% or more of its original capacity. If it has less, they are likely to replace it.
     
  4. Billburns macrumors 6502

    Billburns

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    #4
    Wow, had I known about that guideline/rule I could have gotten my battery replaced

    Mine went dead without 2 years and would hold have an hour of life before having to connect. I also have AppleCare plus

    Too bad that laptop is dead and gone now :(
     
  5. ZapNZs macrumors 68020

    ZapNZs

    Joined:
    Jan 23, 2017
    #5
    If your battery has reached less than 80 percent capacity, under AppleCare it will be replaced for no charge, regardless of cycle count. If it is extremely close to that threshold and AC is about to run out, sometimes they will replace it even if not quite less-than-80%.
     
  6. MBP* thread starter macrumors member

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    Jun 12, 2014
    #6
    But the only way they confirm 'health' is by doing a boot and going through the system health menus and bootup. Even when I called them they read our a ToS about batteries under AC and told me straight it won't be covered unless its a defect. How can they measure capacity?
     
  7. robvas macrumors 68030

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    USA
  8. ZapNZs macrumors 68020

    ZapNZs

    Joined:
    Jan 23, 2017
    #8
    MRI has a battery testing module built into it, which, during the MRI test, charges and discharges the battery a small amount. IIRC, the Apple Service Toolkit also contains an additional, more in-depth tool for testing battery life/health.

    AppleCare covers batteries. If an Apple employee told you this, they may not realize the terms here have changed around 2015-ish.

    "If you purchased an AppleCare Protection Plan for your Mac notebook, Apple will replace the notebook battery at no charge if it retains less than 80 percent of its original capacity."
    https://support.apple.com/en-us/HT204054
     
  9. MBP* thread starter macrumors member

    Joined:
    Jun 12, 2014
    #9
    Well my appointment is today I will report back on what they tell me.

    My coconut battery stats are as follows

    • Design capacity 6330mAh - 89%
    • Cycle count - 457
    • Status - Good
    • Manufacture date - 2014-09-08
     
  10. MBP* thread starter macrumors member

    Joined:
    Jun 12, 2014
    #10
    They concluded that my battery was fine and said they can only replace it if their boot up test concluded it had failed. I also realised the cost of a replacement wasn't as much as I thought it was initially.

    I have about 3 years of usage left to reach the 1000 marker which I believe is considered the threshold before the battery goes wrong, or the point they believe the battery has been 'consumed'.

    I feel I kinda wasted my AppleCare honestly since I really bought it for the battery cause.
     
  11. robvas macrumors 68030

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    Mar 29, 2009
    Location:
    USA
    #11
    If you're at 89% you didn't lose 2 hours out of 6
     
  12. MBP* thread starter macrumors member

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    Jun 12, 2014
    #12
    Well Apple boot screen says 94% so who knows what's right.
     
  13. jerryk macrumors 601

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    Nov 3, 2011
    Location:
    SF Bay Area
    #13
    Those percentage are not all that reliable and indication of remaining battery time. Also battery consumption is non-linear since we run different applications, visit different web sites, go into rooms with different brightness, change music volume, etc.
     
  14. ZapNZs macrumors 68020

    ZapNZs

    Joined:
    Jan 23, 2017
    #14
    Even if the 89% figure is correct (Coconut Battery is IMO quite variable in its accuracy), that's still not close enough to the end of service life for being considered consumed and eligible for replacement under the 80% threshold rule.

    Did Apple offer to review software causes that could relate to the decrease in runtime? If you were only getting 6 hours to begin with (and this was not under heavy load), and are now getting 4 hours, that suggests something other than the battery is the culprit for the poor runtimes. What do your launchd folders look like? What does your CPU look like during your drain intervals? While your usage has not changed, has the OS or have the Apps you use while running on battery power been updated? Is power nap enabled or disabled? If were are talking about low CPU usage with things like browsers (non-streaming/not playing music), MS Office, or email, you should be getting better runtimes if energy saving settings are optimal.
     
  15. MBP* thread starter macrumors member

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    Jun 12, 2014
    #15
    I wasn't aware of the 80% rule prior to booking the appointment and only found out a few hours beforehand. But there's no harm in trying anyway.

    They didn't offer any further help on that front. It's something I will have to investigate myself. It does tell me when I click on the battery icon that Chrome uses a lot of energy, probably because I have 3 or 4 windows open with multiple tabs in each.
     
  16. Samuelsan2001 macrumors 604

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    Oct 24, 2013
    #16
    Chrome is incredibly resource hungry and poorly optimised for OSX, it's literally a battery drain all on its own, switch to Safari for far better battery life.
     
  17. MBP* thread starter macrumors member

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    Jun 12, 2014
    #17
    I use it because my Google account is synced across all devices along with my Bookmarks and passwords. I don't use Safari on any oter machine and if I started using it it will mean I have to them revise how I use browsers on other Windows PCs
     
  18. Samuelsan2001 macrumors 604

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    Oct 24, 2013
    #18
    And that's your choice but as you have noted it will impact battery life, sometimes shutting down a few add ons or plug ins can help quite a bit.
     
  19. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #19
    OP:

    As mentioned above, download "Coconut Battery".
    Then run it and post a screenshot of your results here.
     
  20. MBP* thread starter macrumors member

    Joined:
    Jun 12, 2014
    #20
    I don't mind using Safari, in fact it seems like a more stable browser than Chrome. But can you help me with a solution whereby my bookmarks and passwords can be sync'd across to Google so I can continue using Chrome on other devices where it has been preloaded on?
     
  21. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #21

    yeah there is an app that should do it all.

    https://www.xmarks.com/

    Sorry it took a while I've been a little ill.
     
  22. ZapNZs macrumors 68020

    ZapNZs

    Joined:
    Jan 23, 2017
    #22
    It may also be worth asking, what version of Chrome are you running and what extensions/plugins are you running? Since Chrome introduced some tab management and flash-blocking advantages with something like version 61 (in the last 3 or so months), I've seen a marked improvement in battery life. Switching from AdBlock to uBlock Origin also made a huge impact and I think disabling Chrome Autoupdates by deleting the keystone agent in the launchd folder helped also. I'm getting 10-13 hours of runtime on a MacBook using Chrome with hardware acceleration disabled (it's still a RAM hog). (Admittedly, I've been unable to break my addition to those cheeky spying buttholes at teh Googles.)
    --- Post Merged, Oct 6, 2017 ---
    Feel better! :)
     

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21 September 29, 2017