rMBP—4 hours battery? How to improve this?

Discussion in 'MacBook Pro' started by SAdProZ, Jan 17, 2015.

  1. SAdProZ macrumors 6502a

    Mar 19, 2005
    I've had this (refurb) mid 2014 15" rMBP (NVIDIA 750m) for a five days now. From unplugging, I'm seeing 4 hours battery time. I was expecting up to 8 hours as advertised (6 to be realistic). I was seeing 3 hours from a 5 year old MacBook Air. (Example: Unplugged an hour ago and it says 3:17 remaining. All I'm using is Safari, iTunes, and Airplaying the music to Apple TV). I already use Safari only and keep brightness 2/3rd the way. I doubt the 750m GPU is kicking in during web and music.

    Is this normal for you guys? What expectations should I have?

    What are some best practices to maximize battery? Plug-ins, software, settings?

  2. PennCentralFan macrumors regular


    Jan 6, 2009
    Twin Cities
    I think it's the airplay that is doing your battery in. Can you just keep your computer plugged in? I mean unless you're somewhere where you can't have access to a plug just keep it plugged in.
  3. SAdProZ thread starter macrumors 6502a

    Mar 19, 2005
    I'll make Airplay a power-adaptor-only activity, per your suggestion. Thanks.
  4. yjchua95 macrumors 604

    Apr 23, 2011
    GVA, KUL, MEL (current), ZQN

    Found your problem.

    I use gfxcardstatus to disable the 750M card in my machine when on battery power.
  5. Famousaudio macrumors newbie

    Jan 12, 2015
    new york
    how do you make Airplay a power-adaptor-only activity?
  6. SAdProZ thread starter macrumors 6502a

    Mar 19, 2005
    Thanks, I'll install that now.

    True. I'm seeing close to 6h usage now that I'm not using Airplay.


    By that I mean I will only use Airplay when using the power adaptor (plugged in). I'm borrowing the lingo from Control Panel > Energy Saver where you're either in Battery mode or Power Adaptor mode.

Share This Page

5 January 17, 2015