How long does the battery on your 15 alu powerbook last?

Discussion in 'Macintosh Computers' started by excalibur313, Jan 14, 2004.

  1. excalibur313 macrumors 6502a


    Jun 7, 2003
    Cambridge, MA
    How long does the battery last on your 15" aluminum powerbook? (1 ghz, 512 mb ram, faster harddrive). I can only get like an hour and a half on mine. (and changing it to reduced processor speed only gives me an extra 10 minutes)
  2. robbieduncan Moderator emeritus


    Jul 24, 2002
    I have a 1.25Ghz PB with the 5400 Rpm harddrive in it and can easily get 3 to 3.5 hours if I am just surfing the web or typing stuff into TextEdit. As soon as you start really pushing the CPU (Final Cut for example) the battery life drops off. Switching off Bluetooth and Airport helps some if you aren't using them.
  3. beefstu01 macrumors member

    Oct 24, 2002
    Don't know what you're doing dude... I've got the 1.25GHz AlBook (slower hard drive) and I can get around 4-4.5 hours when taking notes (bluetooth and airport off, brightness down all the way, only word running, blah blah blah).
  4. Westside guy macrumors 603

    Westside guy

    Oct 15, 2003
    The soggy side of the Pacific NW
    I get somewhere north of 3 hours. Having said that...

    Battery life comparisons can be quite misleading - it will vary significantly based on activity (Web browsing is much lower impact than using Final Cut Pro, for instance). You really need to compare with a standard set of applications being run for the same amount of time and the same amount of disk access etc.

    Maybe we should compare times while watching some long movie like "Lawrence of Arabia".:D
  5. James Craner macrumors 68000

    James Craner

    Sep 13, 2002
    Bristol, UK
    If your battery life is only an hour and a half, and you are only web browsing or other light processor tasks then you should try and recalibrate the battery. Make sure the powerbook is fully charged. Run the powerbook on battery power until you get the warning message that the battery is running low. Keep using it until it eventually goes to sleep. Reconnect the power until fully charged. See P18 in your Powerbook manual.
  6. Powerbook G5 macrumors 68040

    Powerbook G5

    Jun 23, 2003
    St Augustine, FL
    I normally get upwards of 3 1/2-4 hours on my 1.25 GHz/5400 RPM HD configuration. I have actually gone over 4 hours now that I have that battery update that was released last month but I've also gone below into two hours when doing more intensive stuff such as importing CDs into iTunes and listening to music.
  7. Kingsnapped macrumors 6502a


    Oct 16, 2003
    Los Angeles, CA
    My Powerbook was totally convinced that it onlty had an hour and a half of battery life at first too, but now I can get it to last an entire school-day between sleeping and taking notes. Run a Software Update and make sure you have all the latest stuff, that's how my PB figured out its lifespan.

Share This Page