Results 1 to 14 of 14
  1. #1


    Member Since
    Aug 30, 2009
    Posts
    3
    Specs:
    MacBook 2.1
    Question about battery life
    I have been told by a friend that I must always run my MacBook from the battery first and plug the electrical cord into an outlet only when the battery runs out and then only as long as it takes to recharge the battery. I was told I am never to run the laptop by plugging the electrical cord into an outlet hoping to save the battery, that instead this eventually kills the battery.

    Is this true?

    Before this I have owned only a PC laptop and I always used the cord except wherever an outlet wasn't available. The battery was then saved strictly for when it was needed. I thought using a battery too often is what kills it eventually, not avoiding using it.

  2. #2

    mikey.b@gmx.com's Avatar
    Member Since
    Sep 05, 2008
    Location
    Guildford, near London, UK
    Posts
    128
    Specs:
    MacBook4,1 2.4Ghz C2D 4GB RAM 160GB HD OS X 10.6 Snow Leopard | iPod Touch 16gb 2G
    Here's what Apple say about it - Link

  3. #3

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,096
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by mikey.b@gmx.com View Post
    Here's what Apple say about it - Link
    Thanks for the great link!

    - Nick

  4. #4

    Sur3Mac's Avatar
    Member Since
    Aug 03, 2009
    Location
    The Netherlands
    Posts
    1,563
    Specs:
    Late 2011 MBP 13" i5/16GB RAM,Early 2007 MB white 13", 2x TV 3rd Gen, ᣦ
    Totally...

  5. #5

    deathcloud's Avatar
    Member Since
    Aug 25, 2009
    Location
    Jacksonville FL
    Posts
    232
    Specs:
    13'' Macbook Pro 2.26 Ghz Intel Core 2 Duo 2 GB 1067 Mhz DDR3 500 GB 7200rpm HD
    Some people get like 7 or 9 hrs of their battery. On my MBP I only get like 5 hrs of battery life. Is there a way that I can get more? I just recently did a calibration aka let my battery run out all the way. Which I thought I would get more battery but it still hovers around 5 hrs... Is that normal for a 13'' MBP? I have brightness in middle, and default energy saver settings.

  6. #6

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,096
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by deathcloud View Post
    Some people get like 7 or 9 hrs of their battery. On my MBP I only get like 5 hrs of battery life. Is there a way that I can get more?
    This depends on what model MBP you have. The older "replaceable" batteries got around 5 hours at best...the newer "non-replaceable" batteries get longer run times.

    Which do you have?

    - Nick

  7. #7

    deathcloud's Avatar
    Member Since
    Aug 25, 2009
    Location
    Jacksonville FL
    Posts
    232
    Specs:
    13'' Macbook Pro 2.26 Ghz Intel Core 2 Duo 2 GB 1067 Mhz DDR3 500 GB 7200rpm HD
    I have the new model. Just purchased it probably about a month ago. Thats why i was suprised. It is the internal one. So I thought I would get like 7 hrs. But oh well maybe I just need to keep draining it (only to 40 percent) Then I charge it.Just do that a couple more times. Get the electrons flowing or whatever hahaha

  8. #8

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,096
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by deathcloud View Post
    I have the new model. Just purchased it probably about a month ago. Thats why i was suprised. It is the internal one. So I thought I would get like 7 hrs. But oh well maybe I just need to keep draining it (only to 40 percent) Then I charge it.Just do that a couple more times. Get the electrons flowing or whatever hahaha
    Two things to remember:

    1. What you are doing on the laptop makes a BIG difference as far as battery life on a single charge.

    2. When companies (including Apple) communicate battery runtimes on a single charge...they're usually doing their battery tests under optimal conditions...to make the numbers look as good as possible.

    Try watching some DVD movies on your laptop while on the battery! Just be sure to be near a chair, so that when you faint after seeing the value you don't hurt yourself!!!

    - Nick

  9. #9

    deathcloud's Avatar
    Member Since
    Aug 25, 2009
    Location
    Jacksonville FL
    Posts
    232
    Specs:
    13'' Macbook Pro 2.26 Ghz Intel Core 2 Duo 2 GB 1067 Mhz DDR3 500 GB 7200rpm HD
    Quote Originally Posted by pigoo3 View Post
    Two things to remember:

    1. What you are doing on the laptop makes a BIG difference as far as battery life on a single charge.

    2. When companies (including Apple) communicate battery runtimes on a single charge...they're usually doing their battery tests under optimal conditions...to make the numbers look as good as possible.

    Try watching some DVD movies on your laptop while on the battery! Just be sure to be near a chair, so that when you faint after seeing the value you don't hurt yourself!!!

    - Nick
    ROFL ok thanks. I am not complaining because I never sit on my couch for 5 hrs anyways. Just was making sure I don't have a faulty battery. It is fine though. I won't leave it plugged in anymore though like apple says not to do. Which I have been doing.

  10. #10


    Member Since
    Aug 19, 2009
    Posts
    5
    Question Battery Life
    Quote Originally Posted by deathcloud View Post
    I have the new model. Just purchased it probably about a month ago. Thats why i was suprised. It is the internal one. So I thought I would get like 7 hrs. But oh well maybe I just need to keep draining it (only to 40 percent) Then I charge it.Just do that a couple more times. Get the electrons flowing or whatever hahaha
    hi
    i got a brand new MBP 13" which when fully charged shows 7 + hrs of battery life. this changes to 4 hrs within an hour of doing normal document work! if checked in % it shows 75%! i am totally foxed why this occurs. Anyone can throw some light on this?
    Chintu

  11. #11

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,096
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by chintu View Post
    hi
    i got a brand new MBP 13" which when fully charged shows 7 + hrs of battery life. this changes to 4 hrs within an hour of doing normal document work! if checked in % it shows 75%! i am totally foxed why this occurs. Anyone can throw some light on this?
    Chintu
    It depends on what your doing with your laptop.

    You will only get 7 hours under optimal conditions...otherwise it will be less.

  12. #12

    mikey.b@gmx.com's Avatar
    Member Since
    Sep 05, 2008
    Location
    Guildford, near London, UK
    Posts
    128
    Specs:
    MacBook4,1 2.4Ghz C2D 4GB RAM 160GB HD OS X 10.6 Snow Leopard | iPod Touch 16gb 2G
    Quote Originally Posted by chintu View Post
    hi
    i got a brand new MBP 13" which when fully charged shows 7 + hrs of battery life. this changes to 4 hrs within an hour of doing normal document work! if checked in % it shows 75%! i am totally foxed why this occurs. Anyone can throw some light on this?
    Chintu
    That is a bit strange though, if you ONLY doing document work as you say. When i say only i mean not listening to music of anything else at all.

  13. #13

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    35,096
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by mikey.b@gmx.com View Post
    That is a bit strange though, if you ONLY doing document work as you say. When i say only i mean not listening to music of anything else at all.
    If "just" doing document work...if airport is on, bluetooth is on, screen brightness is high, keyboard illumination is on...lots of things can decrease runtime while on the battery.

    Battery life is always such a big issues with folks. Apple says 7 hours...and then everyone gets all bent out of shape when they don't get 7 hours...without realizing that 7 hours was obtained under ideal conditions.

    Basically what 7 hours means is the absolute best you can expect...and it all goes down hill from there. So under everyday "realistic" average user conditions...there is no way anyone should expect 7 hours.

    As has been said a "zillion" times...battery life depends on what your doing!

    - Nick

  14. #14


    Member Since
    Aug 19, 2009
    Posts
    5
    Unhappy
    Quote Originally Posted by pigoo3 View Post
    If "just" doing document work...if airport is on, bluetooth is on, screen brightness is high, keyboard illumination is on...lots of things can decrease runtime while on the battery.

    Battery life is always such a big issues with folks. Apple says 7 hours...and then everyone gets all bent out of shape when they don't get 7 hours...without realizing that 7 hours was obtained under ideal conditions.

    Basically what 7 hours means is the absolute best you can expect...and it all goes down hill from there. So under everyday "realistic" average user conditions...there is no way anyone should expect 7 hours.

    As has been said a "zillion" times...battery life depends on what your doing!

    - Nick
    the battery life figures i got were without blue tooth on, dimmed backlight and no other application other than Mac Word being used! while the % shows in the region 75-80% the hours shown is 4hrs! i guess i will have to live with a 5 hr max battery life.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. battery life question
    By Arthur7258 in forum Switcher Hangout
    Replies: 9
    Last Post: 01-17-2011, 03:11 PM
  2. Question About Battery Life
    By Scottie2009 in forum Apple Notebooks
    Replies: 2
    Last Post: 08-03-2009, 01:12 PM
  3. Battery Life Question
    By mloney87 in forum Apple Notebooks
    Replies: 6
    Last Post: 12-15-2008, 09:54 AM
  4. Battery Life Question
    By CircularSaw in forum Apple Notebooks
    Replies: 5
    Last Post: 10-02-2008, 04:29 AM
  5. Battery Life Question
    By Steel02001 in forum Apple Notebooks
    Replies: 5
    Last Post: 02-17-2005, 08:08 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •