Battery life of 2017 MBP 13 without touch bar - poor?

Discussion in 'MacBook Pro' started by manmit, Jul 13, 2017.

  1. manmit macrumors member

    Joined:
    Jun 14, 2012
    Location:
    Toronto, Canada
    #1
    Have nTB base model (256gb ssd though) 2017 13 inch. I am coming from 2015 13 inches.
    Issue: I am not getting more than 6 hours battery life.
    Work: Spark (email), Excel, 5 safari tabs, slack, zoom (web conferencing tool), Google drive, and fantastical 2
    Set up: External monitor hooked up with HDMI via Satechi adaptor. Using apple magic mouse and keyboard (Bluetooth)

    Losing 10% of battery in 20-25 minutes. Anyone facing similar issue? How is your battery holding up?
     
  2. joefoong79 macrumors regular

    Joined:
    Jun 23, 2017
    #2
    6 hours much reasonable because you had external monitor attached.
     
  3. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #3
    Yep that sounds about right for that workload with an external monitor connected.

    If you are stationary with a monitor though then plug it, why would you needlessly put cycles on your battery by running it on battery in a stationary position.
     
  4. manmit thread starter macrumors member

    Joined:
    Jun 14, 2012
    Location:
    Toronto, Canada
    #4
    Because I thought continously keep battery charged up may eventually damage the battery life and hold time. Is this a myth?
    --- Post Merged, Jul 13, 2017 ---
    External monitor is not powered by mbp but through external power supply. Why would it impact battery life?
     
  5. macintoshmac macrumors 68030

    macintoshmac

    Joined:
    May 13, 2010
    #5
    Is this your typical way of working? And yes, this reduction is normal for a computer designed to be used on the go. You are using everything - from bluetooth to external adapters and pushing the GPU to drive an external monitor as well as the internal. This is very normal. Expect the cat to meow if you yank its tail.
    --- Post Merged, Jul 13, 2017 ---
    Sure, it is not powered by battery life. But, here's the trick question for you: how do you think the monitor is getting its data? That - takes power from the MBP.
     
  6. jdechko macrumors 68040

    Joined:
    Jul 1, 2004
    #6
    The battery ought to be exercised occasionally, and even allowed to fully deplete. If you only ever use it plugged in, then it will hurt the battery. However, Apple has taken steps against even this. When plugged in, the system is smart enough, and allows some slight battery usage (maybe 3-5%) before topping itself back up.

    Keeping it plugged in while working on the external monitor is probably better in the long run..
     
  7. joefoong79 macrumors regular

    Joined:
    Jun 23, 2017
    #7
    Because external monitor using MacBook GPU. If you likely to rundown your battery, will suggested do it twice a month and each time till 50% then charge it back full ( don't calibration the battery) I'm using this technique all on my MacBook. The oldest 2011 MacBook Pro still on 88% health on full charge.
     
  8. manmit thread starter macrumors member

    Joined:
    Jun 14, 2012
    Location:
    Toronto, Canada
    #8
    I understand but what changed in 2017 version that is causing this? I never had this kind of low battery in 2015 mbp - had the exact same set up and external monitor.
     
  9. joefoong79 macrumors regular

    Joined:
    Jun 23, 2017
    #9
    Basically the mpb 2017 battery is smaller than 2015. But how many hours different of your 2015 with external monitor? Brightness and what is running on background also major affect.
     
  10. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #10
    Yep joefoong is pretty much spot on here, its got a smaller battery and that is made up for with software and hardware optimisations that use less battery, when running an external monitor though it will still use the same amount of power to drive that screen.

    As long as you use it on battery occasionally (once or twice a month) you can leave it plugged in whenever you are at your desk. This will not significantly impact the battery life, age is the biggest killer of apple batteries as far as I can tell, it will start to die anywhere between 3 and 5 years old whatever you do so don't sweat it.
     
  11. JohnnyGo macrumors 6502a

    Joined:
    Sep 9, 2009
    #11
    New battery tech no longer has “memory effect”. Apple specifically recommends that you can use your MacBook plugged in and once a month leave it on battery to full depletion.
     
  12. JohnnyGo macrumors 6502a

    Joined:
    Sep 9, 2009
    #12
    Your battery recommendation is spot on

    You mention the GPU. Indeed any monitor, external or internal will use the GPU. In the case of the 13” MBP there’s only an iGPU, no dedicated GPU, so the higher consumption is not due to this factor. Dedicated GPU + external monitors are real killers for 15” MBP batteries.

    Any MacBook with attached peripheral, be it external drive or monitor, will have more power consumption hence less battery life. It’s the nature of such TB/USB controllers.
     
  13. manmit thread starter macrumors member

    Joined:
    Jun 14, 2012
    Location:
    Toronto, Canada
    #13
    You nailed it. I think this is the biggest reason - smaller battery. Thank you
     
  14. joefoong79 macrumors regular

    Joined:
    Jun 23, 2017
    #14
    Pay attention on CPU or gpu if 13" is combined together. When external monitor is connected the CPU using will spike or raise higher. It tell you external monitor costing you using CPU and gpu together when you check the status of the CPU will tell. Short answer is anything plug in on USB-c event just a flash drive will draw you power out.
     
  15. Apples555 macrumors regular

    Joined:
    Mar 4, 2012
    #15
    I don't know if this is relevant, but battery life on my 2010 13" MBP is significantly better connected to an external DisplayPort monitor than with the onboard LCD.
     
  16. Jamalogo10 macrumors member

    Jamalogo10

    Joined:
    Jun 13, 2017
    #16
    I'm getting 9+ hours with chrome use, high brightness, itunes and word running in the background.
     
  17. joefoong79 macrumors regular

    Joined:
    Jun 23, 2017
    #17
    I really don't understand. Just get a battery pack it last another 8 hours problem solved.
    --- Post Merged, Aug 5, 2017 ---
    Why stress so much about the battery:D:D
     
  18. macintoshmac macrumors 68030

    macintoshmac

    Joined:
    May 13, 2010
    #18
    Batterititis. Nothing more.
     
  19. psymps macrumors member

    psymps

    Joined:
    Aug 12, 2017
    Location:
    England
    #19
    Does your Chrome usage involve YouTube videos?
     
  20. kj-T macrumors newbie

    Joined:
    Aug 20, 2017
    #20
    An
    Any good recs for a battery that works with the 2017 MBP 13" nTB? Most on the market, even the huge 20,000 amps ones seem to be rated at 5 or 5.1V meant for phone charging.
     

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