unibody MBP w/"7 hour" battery - how has your battery life been?

Discussion in 'MacBook Pro' started by TheNorthWaves, Feb 13, 2010.

  1. TheNorthWaves macrumors 6502

    Joined:
    Oct 13, 2007
    Location:
    USA
    #1
    I am seriously considering purchasing one of the new unibody MBP's with the new "7 hour" battery. Just a couple quick questions for you all:
    Do you get 7 hours when you turn wifi off, the screen down to 1/3 brightness, don't use the CD drive/etc, or does it actually last 6-7 hours in normal use (surfing web, screen really bright, backlit keyboard on)?
    Has anyone experienced a degradation in battery life after a bunch of cycles? I notice apple claims that the new battery will last 5 years, yet they don't warranty it for more than a year. That does not sound good to me. Opinions?
     
  2. silverite macrumors newbie

    Joined:
    Jan 27, 2010
    #2
    It usually take my laptop to class. I have my laptop on with wifi on, and half brightness (sometimes a bit more than half). After three hours I sometimes have around 40-60% of battery life left (depending if I come to class with a full charge etc).

    My macbook pro was ordered perhaps over a month ago - but my friend with a year old mbp tells me that the battery life will start dropping down further on in the road.

    So I can say the battery is decent.
     
  3. kernkraft macrumors 68020

    kernkraft

    Joined:
    Jun 25, 2009
    #3
    My '7 hour battery' lasts 4 at the most, but that is wifi everything being turned off, including very dark screen.

    I think that it's a disappointment. Don't plan on doing a whole days' work on one battery! Don't worry, you can always have an extra one - oops, sorry! You cannot!
     

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  4. Mintin8 macrumors 6502a

    Mintin8

    Joined:
    Mar 4, 2009
    Location:
    United Kingdom
    #4
    The battery will remain in better conditions if you properly calibrate it every so often. I got around 5 hours with wifi/itunes/word/safari on and brightness at half way.
     
  5. Disc Golfer macrumors 6502a

    Joined:
    Dec 17, 2009
    #5
    I regularly get 5 hours with bluetooth off, wifi on, keyboard light @ 1 dot, screen at 33%. Watching dvds will decrease battery life to about 3 hours.
     
  6. ARF900 macrumors 65816

    ARF900

    Joined:
    Oct 30, 2009
    #6
    Apple doesnt warranty anything for more than a year, yet people have 10 year old macs that are still kickin.

    on my 13" I usually get about 5 hours with wifi, itunes, safari, and mail running, backlight on lowest setting, screen brightness 1/3. Bluetooth off

    With no backlight, low screen brigtness, and itunes + pages running i usually get 6 1/2 - 7 1/2 hours. 4 hours of HD video playback with wifi and backlight off and screen brightness 1/2 way up.

    Remember to keep bluetooth off if your not using it and calibrate your battery. I calibrate every 2 months.
     
  7. craigc1264 macrumors newbie

    Joined:
    Jan 12, 2010
    #7
    I get 5 hours easily with everything on and screen at full brightness, and keyboard backlight full as well. When I dim the screen/keyboard, and turn some stuff off it goes up to 7:15.
     
  8. Jaro65 macrumors 68040

    Jaro65

    Joined:
    Mar 27, 2009
    Location:
    Seattle, WA
    #8
    I get around 5 hours when I turn things down. The HyperMac makes this easier to deal with. :)
     
  9. npep macrumors member

    Joined:
    May 7, 2007
    #9
    So, if real life is on the 4-5, maybe 6 hour range. How did Apple come up with 7 hours?

    Macbook sitting on the shelf doing nothing for 7 hours?
     
  10. Puqq macrumors regular

    Joined:
    Oct 18, 2009
    #10
    Yep. This is the standard Max Battery test. New MBP battery usually lasts about 7.15-7.50 on idle. You cannot measure the actual battery life acurately, because it really depends on the way you use your PC. From tests, MBP has juice for ~6 hours in reading test (open document/website, half brightness, scrolling down time after time) and 4-6 for standard use (browsing, reading, typing and video (not DVD))

    Apple may seem to lie a little about the battery life, on the other hand most other manufacturers lie even about Max Battery life...
     
  11. kny3twalker macrumors 65816

    kny3twalker

    Joined:
    Oct 25, 2009
    #11
    I have seen my battery calculator hit over 10 hours sitting at idle, and I can easily make it through an hour and twenty minute class and still have close to 90% left on my battery. During class, I am usually typing code, reading pdfs or powerpoints, and/or surfing the web (lightly), so while I agree 5 or 6 hours is closer to what is achievable with normal work loads, I think 7 hours is very possible without wifi off and the screen very dim.
     
  12. Symbolism macrumors newbie

    Joined:
    Jan 19, 2010
    #12
    I usually get around 6 hours of use a day while I'm on campus at my university taking lecture notes on Word Document, Facebook, etc. with no backlight and 70% screen brightness.

    Keep in mind I've only calibrated my battery once or twice in 8 months use with 61 cycles... so my indicator might be a bit wrong (I finally found time to calibrate today over the three day weekend).
     
  13. tomas4jj macrumors newbie

    Joined:
    Feb 13, 2010
    #13
    my "airport hardware" has disappeared, wtf?!

    All of a sudden on my powerbook g4 the airport has just disappeared, says it can't find any "airport hardware." Wifi gone, i'm writing this with an ethernet cord. What happened? What can I do? Help me . . .
     
  14. TheNorthWaves thread starter macrumors 6502

    Joined:
    Oct 13, 2007
    Location:
    USA
    #14
    Thread hijack of the CENTURY, haha :D

    Thank you all for the replies - keep them coming! Please post your model/processor speed as well, if you know
     
  15. gazzamac macrumors member

    Joined:
    Jan 17, 2010
    #15
    My 4 month old mbp lasts around 6 hours light use with backlight at half way.

    Very happy with that
     
  16. michaelfengdayu macrumors member

    Joined:
    Jun 22, 2007
    #16
    It really depends on how you use it

    It really depends on how you use it. The CPU uses 5-45 watt. hard drive 1-3 watt. screen I guess 10 watt at most with LED? I got 7.5 hrs with internet browsing and viewing PDFs. But only 3.5 when watching Youtube no matter how I adjust the screen.
     
  17. tongrd macrumors newbie

    Joined:
    Sep 26, 2009
    #17
    I've gotten 9-10 hours out of a 17" MBP, though I do conserve battery :) usually this includes wifi off, lowest brightness and display sleep in 1 minute. Otherwise I think 6 hours with just under half brightness is about right.
     

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