Battery Clarification

Discussion in 'MacBook Air' started by kodrone, Apr 1, 2018.

  1. kodrone macrumors newbie

    Apr 1, 2018
    Hi guys,

    This is probably me being paranoid, but I wanted to ask a question regarding the battery life of a MacBook Air. I purchased the laptop two days ago and have used it sparingly. I don't have anything downloaded/ or it hasn't even been synced yet, the brightness setting is at 75%, all the apps are closed, 2 tabs open on the safari.. the battery went from 98% to 86% in roughly 2 hours and 3 minutes. Is that normal? I did the diagnostic test and everything comes up normal. My main use of the air laptop is to write documents/browse internet - basic things. Which is what I had been doing today - just browsing online and watching videos to see how the battery would hold up. Anyway, 12% drop in 2 hours and 3 minutes.. normal or is something off?
  2. Pugly macrumors regular

    Jun 7, 2016
    Seems normal to me. Screen brightness has a big impact on battery life, so I turn that down to just what I can tolerate when I want to conserve battery life.

    Watch for websites that are CPU hogs, usually ones not well put together with a ton of ads.

    I have a 11" MBA and I never get the advertised battery life. Light usage is more around 6 hours for me, and with any heavy use it goes down to more around 2-3 hours.
  3. NoBoMac macrumors 68000

    Jul 1, 2014
    As ^^^Pugly said, seems normal. Extend that out, you are looking at 10 hours use from full charge. Apple says 12 hours, but for example, their video playback vs battery test is playing an iTunes video, and does not appear to be downloading content, which will drain the battery additionally.
  4. Mrbobb macrumors 601

    Aug 27, 2012
    12% in 2 hr = 16+ hour before you have to charge again. That's not what they sold you? What's the number they quoted you/read?
  5. sergeyz macrumors member


    Feb 14, 2018
    The latest model of the MacBook Air 13" usually runs on a battery for about 7.5 hours.

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