Just received 5400rpm. Battery Life

Discussion in 'Buying Tips, Advice and Discussion (archive)' started by gjg554, Sep 26, 2003.

  1. gjg554 macrumors newbie

    Joined:
    Sep 26, 2003
    #1
    I just received by 5400rpm Power Book 17in. After opening and charging to full capacity, I have 1:50. 10mins less than what I heard 4200 people have. Hope this helps
     
  2. dabirdwell macrumors 6502

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    Sep 26, 2002
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    Oklahoma
    #2
    you have not calibrated your battery. run the powerbook until it is out of power and goes to sleep; then charge it to full capacity. this will calibrate your battery.
     
  3. gjg554 thread starter macrumors newbie

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    Sep 26, 2003
  4. dabirdwell macrumors 6502

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    Sep 26, 2002
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    Oklahoma
    #4
    I got my 15" 1.25 today and the battery says 1:45 or so at full charge. that's kind of dissapointing considering that the 1:45 is with power saving features turned *on*.

    I love the machine, but I would like a little more life.
     
  5. NavyIntel007 macrumors 65816

    NavyIntel007

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    Nov 24, 2002
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    Tampa, FL
    #5
    10.2 never gives proper battery reads. Time it as you run your machine. It will usually be longer than the time given to you when you initially unplug it.
     
  6. LethalWolfe macrumors G3

    LethalWolfe

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    #6
    Doesn't that make sense that a faster spinning HDD would eat into your battery life?


    Lethal
     
  7. junior macrumors 6502a

    junior

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    Mar 25, 2003
    #7
    I think his post was for those wondering exactly how much more battery life it drains than the original 4200rpm.
     
  8. Abstract macrumors Penryn

    Abstract

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    #8
    I thought 10.2.8 results in an inaccurate battery life time, not the other 10.2 versions of OSX?
     
  9. Phatpat macrumors 6502a

    Phatpat

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    Washington DC
    #9
    I had inaccurate readings with 10.2.7 as well as 10.2.8. Not really a big deal, the percent indicator works fine for me
     
  10. Powerbook G5 macrumors 68040

    Powerbook G5

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    Jun 23, 2003
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    St Augustine, FL
    #10
    I don't use the status, I just went by the clock. I have the 1.25 GHz 15" with the 5400 RPM drive and when I ran it down to sleep mode, I got nearly 3 hours and 40 minutes using energy saving and half screen brightness. Most often, I am not using the HD, so I don't see how the 5400 RPM drive would really eat away at battery life compared to the standard one. I checked the stats on the Hitachi website and they are both nearly identical when at rest or at low power modes. It's only at peak seek/write modes that it sucks up a significantly larger percentage of battery power.
     
  11. LethalWolfe macrumors G3

    LethalWolfe

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    #11
    Yeah, I realized that after I posted but I was just too lazy to edit my post. ;)


    Lethal
     
  12. PaisanoMan macrumors member

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    Jan 26, 2003
    #12
    That's fantastic. I wonder how many people are pulling down the battery menu and glancing at the readout to indicate battery life?

    I'm glad to hear a counterexample of reasonable battery life with the new 15" PowerBooks.
     
  13. Powerbook G5 macrumors 68040

    Powerbook G5

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    #13
    I'm starting to think that is how people are getting their specs, because I have not once gotten under 3 hours, yet I keep hearing about people getting only 50 minutes to just under 2 hours all the time. Either they aren't checking real world battery time (mine told me 2 hours and 34 minutes, even though looking at the clock next to me, I got 3 hours and 39 minutes before it went to sleep) or they are using highest setting processor or something else. It just seems weird, because even my sister can get around 2 hours on her Toshiba with a 2.66 GHZ P4 with hugely drastic measures, and these PowerBooks use a lot less energy than those P4s do.
     
  14. dabirdwell macrumors 6502

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    Oklahoma
    #14
    Another factor here- our new 15" PowerBooks have a lower battery capacity than their 12" siblings.
     
  15. Powerbook G5 macrumors 68040

    Powerbook G5

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    Jun 23, 2003
    Location:
    St Augustine, FL
    #15
    That's true, but it still shouldn't be as bad as getting only half the battery life like some people are saying they get consistently. I really cannot believe that I am the only one who gets between 3-4 hours battery life and everyone else is getting maybe 2 at most. Between both my batteries, I have 7-8 hours of useable life for when I am traveling, and I think that is incredible considering that could last me on a cross-country plane flight if I needed to do something on my PowerBook.
     
  16. advres Guest

    advres

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    Oct 3, 2003
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    Boston
    #16
    i have a new aluminum 1.25 but with the 4800. i have a 3 hour graphics class i use it in and have never had the battery die on me while i was in there. that is also running photoshop and illustrator almost non-stop.
     

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