Battery Life Monitor

Discussion in 'MacBook Pro' started by markp99, Jul 16, 2012.

  1. markp99 macrumors member

    Joined:
    Jun 14, 2012
    Location:
    New Hampshire
    #1
    Mac newb here (RMBP, 16GB, 256GB, 2.3GHz)

    I am reading the RMBP should have up to 7hr of battery life. I understand this could be possible with low brightness and lightweight duties, etc.

    Reality for me ~feels significantly less, even with light duty browsing, email, etc., my gut tells me I am seeing more like 3 hours, but I have no facts to back that up. Brightness at 50%, chassis is barely warm when I am using the machine.

    Are there any battery life apps out there that will clock up-time between full charges? And then, what might e the primary consumers - like a few Android battery apps i have seen. I do have iStat Pro running, but this does not provide such a feature.

    Any suggestions, I am just curious. I may be way off on my estimate, but I started off fully charged last night around 6pm, poked around email & web a bit, in a few separate, short-ish sessions. Right now, on first look this morning, I am already back to 34%.

    Hmm, expected better. But, again, I may just not be fully accounting for actual time.
     
  2. Auzburner macrumors 65816

    Auzburner

    Joined:
    Apr 11, 2008
    Location:
    Syracuse, NY - USA
    #2
    Well, leaving it on will drain the battery throughout the night. Granted, it will eventually sleep. Verify you energy settings in System Preferences and adjust accordingly.


    Also, try Coconut battery
    http://www.coconut-flavour.com/

    It's simple, but I don't think it gives you how many hours to drain battery. You may find it useful.
     
  3. markp99 thread starter macrumors member

    Joined:
    Jun 14, 2012
    Location:
    New Hampshire
    #3
    Thanks, I do have the coconut app. Also, no such feature.

    I put the RMBP to sleep when I am finished (by closing the cover). I assume this is the correct approach to putting to sleep, vs click the options.

    I do understand that even while sleeping hr Mac will consume a trickle of change, but not significant % points overnight, right??
     
  4. Dangerous Theory macrumors 68000

    Joined:
    Jul 28, 2011
    Location:
    UK
    #4
    You could always fully charge it and play around for a little bit and see what the battery life estimate says. Of course it's not 100% accurate, but definitely a reasonable estimate.
     
  5. surjavarman macrumors 6502a

    Joined:
    Nov 24, 2007
    #5
    You should get around 5-6 hours of battery life on the dedicated graphics card. About 7 hours on automatic switching (in the systems prefs). And more than 8 hours if you use gfxcardstatus to force your rMBP to use integrated only.
     
  6. Auzburner macrumors 65816

    Auzburner

    Joined:
    Apr 11, 2008
    Location:
    Syracuse, NY - USA
    #6
    I would say it should lose no more than 5% overnight. Focus on keeping brightness down when in use.
     
  7. TickleMeElmo macrumors regular

    Joined:
    Jun 19, 2012
    #7
    If you run anything with flash such as youtube you can kiss all semblance of good battery life goodbye.
     
  8. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #8
    There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.

    This should answer most, if not all, of your battery/charging questions:
    Typical sleep drain is about 1% per hour of sleep.
     
  9. surjavarman macrumors 6502a

    Joined:
    Nov 24, 2007
    #9
    BS. Standby time is approximately 30 days in sleep. This would translate to a battery drain of around 0.14% per hour or about 1.1% for an 8 hour sleep.
     
  10. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #10
    I didn't say 1% per hour of standby mode. I said 1% per hour of sleep, which is accurate.
     
  11. Hungry&Foolish Suspended

    Joined:
    Mar 29, 2012
    #11
    Battery Logger in the Mac app store for 1.99$.
     
  12. markp99 thread starter macrumors member

    Joined:
    Jun 14, 2012
    Location:
    New Hampshire
    #12
    Nice, that comes very close!
     

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