Is it safe to leave my MacBook plugged in?

Discussion in 'Community Discussion' started by maccam, Dec 21, 2008.

  1. maccam macrumors 6502a

    maccam

    Joined:
    Feb 18, 2007
    Location:
    Wisconsin
    #1
    Hi!

    I have a couple of questions:

    1: is alright if my Dad keeps his MacBook plugged in for a
    long period of time while his battery is in it. Will it hurt the battery?

    2: And how many cycles is the battery good for?

    Thanks,
    maccam
     
  2. JG271 macrumors 6502a

    JG271

    Joined:
    Dec 17, 2007
    Location:
    UK
    #2
    Yeah its fine. Might be a good idea to fully charge up and discharge it every few months though, and when you first use it.

    2) Depends really. I'm gonna say around 300. If you discharge most of the way when you use it, it should last for longer.
    Warranty wise, they say 1 year of use or 300 cycles, whatever comes first.
     
  3. Melrose macrumors 604

    Melrose

    Joined:
    Dec 12, 2007
    Location:
    In a sidewalk.
    #3
    I read somewheres (don't ask for the link because I forgot to bookmark it) that you should let the battery go below 10% about once a month, and then juice up to the hilt the next time you have it on.
     
  4. Dagless macrumors Core

    Dagless

    Joined:
    Jan 18, 2005
    Location:
    Fighting to stay in the EU
    #4
    Really? My 4 year old PB battery only lasts about an hour nowadays but the 3 year old replacement battery lasts 2.5-3 hours still. If my MB battery only lasts a year I'll be p*ssed :mad:
     
  5. benthewraith macrumors 68040

    benthewraith

    Joined:
    May 27, 2006
    Location:
    Miami, FL
    #5
    1: Yes. Unlike Nickel batteries. Which I don't think are manufactured anymore.
    2: I hear 500 is a good example before the battery needs to be replaced.

    You can download CoconutBattery, which will tell you the health of the battery.

    You should also try and calibrate the battery every few months by draining the battery completely. The computer will go into standby. Then leave it for a few hours in forced standby until the battery is completely drained. Then charge it back up.
     
  6. SFStateStudent macrumors 604

    SFStateStudent

    Joined:
    Aug 28, 2007
    Location:
    San Francisco California, USA
    #6
    Your Dad's MB will be fine. I try to keep my MBA plugged in at all times and have only 8 cycles on it since I bought it in August '08. I've actually run it down to standby mode twice and it's still running quite well...:cool:
     
  7. pimentoLoaf macrumors 68000

    pimentoLoaf

    Joined:
    Dec 30, 2001
    Location:
    The SimCity Deli
    #7
    My MBPro is on all the time as it has BOINC calculating ABC@Home.

    DO NOT OPERATE LAPTOP W/O BATTERY unless you don't mind a half-speed computer. Read this <--- click
     
  8. ZiggyPastorius macrumors 68040

    ZiggyPastorius

    Joined:
    Sep 16, 2007
    Location:
    Berklee College of Music
    #8
    I really hope 500 isn't a good estimate for when I'll need to replace the battery. Given, I need a battery anyways, because Apple dented my current one, but if I have to replace it around 500, I'll be getting about a year and a half of battery, and that's it. Hell, I'm less than a month past the one year mark, and I'm already at about 400.
     

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