Go Back   MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Apr 18, 2011, 10:32 PM   #1
Klokio
macrumors newbie
 
Join Date: Apr 2011
Macbook Pro 15in shutting off when run on battery

Hi everyone,

I have the last model of the MBP that had the removable battery (so I think 2008), recently whenever I run it on the battery it shuts off at pretty high percentages charged, for instance it just shut off and was at 60% charge. This doesn't happen when it is plugged in with the battery in or out (I frequently take the battery out in an attempt to save it when I'm at my desk anyway).

I'm going to guess this is just a battery problem and mine is going bad, even though istat says 85% health. Anyone else having this problem?

Thanks for your time!
Klokio is offline   0 Reply With Quote
Old Apr 18, 2011, 10:58 PM   #2
Intell
macrumors P6
 
Intell's Avatar
 
Join Date: Jan 2010
Location: Inside
Quote:
Originally Posted by GGJstudios
This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
.
__________________
Last edited by Intell; Yesterday at 6:21 AM.
Intell is offline   0 Reply With Quote
Old Apr 19, 2011, 07:09 PM   #3
Klokio
Thread Starter
macrumors newbie
 
Join Date: Apr 2011
I would calibrate my battery, however it does not go to sleep when it runs down. It simply shuts off as if someone had pulled the battery out with no warning. Should I try and calibrate the battery this way?
Klokio is offline   0 Reply With Quote
Old Apr 20, 2011, 01:41 PM   #4
GGJstudios
macrumors Westmere
 
Join Date: May 2008
Quote:
Originally Posted by Klokio View Post
I would calibrate my battery, however it does not go to sleep when it runs down. It simply shuts off as if someone had pulled the battery out with no warning. Should I try and calibrate the battery this way?
Reset the SMC, then try calibrating. Instructions for both in the link posted by Intell.
GGJstudios is offline   0 Reply With Quote
Old Apr 20, 2011, 01:47 PM   #5
snaky69
macrumors 68040
 
Join Date: Mar 2008
Quote:
Originally Posted by Klokio View Post
Hi everyone,

I have the last model of the MBP that had the removable battery (so I think 2008), recently whenever I run it on the battery it shuts off at pretty high percentages charged, for instance it just shut off and was at 60% charge. This doesn't happen when it is plugged in with the battery in or out (I frequently take the battery out in an attempt to save it when I'm at my desk anyway).

I'm going to guess this is just a battery problem and mine is going bad, even though istat says 85% health. Anyone else having this problem?

Thanks for your time!
Don't take out your battery, for one it doesn't save it at all, so you're not doing it any good, and for seconds, you're making the computer cut back on its processing power.

Put it in, and leave it in.

http://support.apple.com/kb/HT2332
__________________
Early 2008 MBP 2.4Ghz Penryn, 4GB RAM, WD Scorpio Black
2012 MBP 2.6Ghz Ivy Bridge, 16GB RAM, 840EVO and 750GB Opti-bay
iPhone 3G, 16GB, Black
iPhone 4S, 32GB, Black
snaky69 is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Run Macbook Pro without Battery and Hard Drive drtanz MacBook Pro 5 Apr 30, 2014 08:30 AM
Son killed my 15in MacBook Pro! simple411 MacBook Pro 14 Sep 27, 2013 09:57 AM
Macbook pro 13 won't run on battery help. triplelucky MacBook Pro 4 Oct 22, 2012 07:52 PM
Macbook Pro 13in Vs 15in SouthernStar14 Buying Tips and Advice 7 Aug 16, 2012 03:39 PM
Should I buy the Macbook Pro with Retina Display or Macbook 15in (Mid- 2012) FatGuy007 MacBook Pro 1 Jun 16, 2012 01:06 PM

Forum Jump

All times are GMT -5. The time now is 11:20 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC