• 3.0 out of 5 stars

    How to get the most out of your Mac Battery

    • Written by from Washington

    I have also found the battery in my Macbook to be less than great. But that is apparently a known trade-off on Apple's part. Seeing some of the reviews here, it seems clear that some people would benefit from "recalibrating" their batter from time to time. Here's how to do it (from Apple's support site):

    PowerBook G4 (15-inch Double-Layer SD), MacBook (all models), MacBook Pro (all models), and MacBook Pro (17-inch) (all models)

    The battery calibration for the PowerBook G4 (15-inch Double-Layer SD) and any model of MacBook or MacBook Pro has been updated because of a new battery released with this computer. With these computers, follow these steps to calibrate your battery:

    Plug in the power adapter and fully charge your PowerBook's battery until the light ring or LED on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged.

    Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in.

    Disconnect the power adapter while the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, the low battery warning dialog appears on the screen.

    At this point, save your work. Continue to use your computer; when the battery gets very low, the computer will automatically go to sleep.

    Turn off the computer or allow it to sleep for five hours or more.

    Connect the power adapter and leave it connected until the battery is fully charged again.

    Tip: When the battery reaches "empty", the computer is forced into sleep mode. The battery actually keeps back a reserve beyond "empty", to maintain the computer in sleep for a period of time. Once the battery is truly exhausted, the computer is forced to shut down. At this point, with the safe sleep function introduced in the PowerBook G4 (15-inch Double-Layer SD) computers, the computer's memory contents have been saved to the hard drive. When power is restored, the computer returns itself to its pre-sleep state using the safe sleep image on the hard drive.

    51 of 55 people found this useful

  • 3.0 out of 5 stars

    752 cycles

    • Written by from denver

    Purchased my mac almost four years ago and it's battery health is at 36%, it's only given me 752 cycles. I guess I didn't know I had to "take care" of the battery or even HOW-to take care of the battery... Apple, aren't you missing something on the box/manual/intro-message?

    42 of 51 people found this useful

  • 3.0 out of 5 stars

    Disappointed as well as pleased

    • Written by from Pompano Beach

    I got my macbook aluminum around June of 2009 and the battery life has diminished greatley.When the battery was new it hold charge well but 9 months later it dont.I am a bit disappointed with apple.

    34 of 37 people found this useful

  • 3.0 out of 5 stars

    A bit disappointed

    • Written by from BARCELONA

    Same here, everyday intense usage and after about one year computer shuts down and battery is completely down although recently charged.. New one needed!!

    25 of 27 people found this useful

  • 3.0 out of 5 stars

    Faster and faster down the spiral.

    • Written by from Craig

    Health Information:
    Cycle count: 94
    Condition: Normal
    Battery Installed: Yes

    Dunno what's going on, but this battery just doesn't cut it anymore. I've had this second generation, or first, aluminum laptop for little under a year and now the battery is acting up. The battery can't last no longer than 45 minutes without dying. As I type this, the battery went down from 21% to 14%, which was about five minutes. I like this brand, but this is ridiculous. I don't want to have to switch over to Dell or Sony.

    23 of 24 people found this useful

  • 3.0 out of 5 stars

    not to good.

    • Written by from calgary

    Charge remaining (mAh): 1921
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 2644
    Health Information:
    Cycle count: 304
    Condition: Check Battery
    Battery Installed: Yes
    Amperage (mA): 741
    Voltage (mV): 12553

    only 300 cycle count and it has but a hint of a charge.

    33 of 46 people found this useful

  • 3.0 out of 5 stars

    Used to be good...

    • Written by from Delran

    I was very happy with the battery for the first year. Now unfortunately I am only getting about 1 hour web surfing and 20-30 mins with any type of video. A battery should last longer than a year and 4 months in my opinion.

    21 of 23 people found this useful

  • 3.0 out of 5 stars

    Good At First

    • Written by from Poughkeepsie

    This battery came with my laptop that I bought two years ago. Now it's not lasting so long - only several hours. Over time it'll probably last even less time. But it's the only choice you've got if you have a 13 or 14 inch unibody MacBook Pro.

    23 of 39 people found this useful