New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook Pro - Reduced battery life after battery calibration


Post Reply New Thread Subscribe

 
Thread Tools
SoftLayer

 
Member Since: Sep 13, 2009
Posts: 2
SoftLayer is on a distinguished road

SoftLayer is offline
I am new to Macs and one major reason I bought one for college was the great battery life of the 2009 MBP's. I was extremely pleased initially with the seven to eight hour* usage while browsing the internet using wireless and listening to music with headphones. Battery life is really important to me so decided to calibrate my battery after reading about regular battery maintenance. After I calibrated my batter, however, my maximum run time now is around 5.5 hours with no apps running. Rarely do I ever see the battery life display show 7+ hours anymore. My reduced battery life was noticed before my upgrade to 10.6.

*Battery times are taken from the battery life meter

Other battery life maintenance tips would be helpful too; for instance, I've heard conflicting arguments about leaving laptops charging overnight.

Thanks to anyone who can help
QUOTE Thanks
richsadams

 
richsadams's Avatar
 
Member Since: Aug 17, 2009
Location: NW Left Coast
Posts: 70
richsadams will become famous soon enough
Mac Specs: iMac 27" Late 2013 - 3.5GHz Core i7 - 32GB RAM - GTX 780< 4GB GPU

richsadams is offline
I ran into the same issue with my White MacBook (2.1GHz Core 2 Duo, 4GB RAM, 320GB HDD). I followed the Apple guidelines exactly.

Prior to the calibration (depending on what I was doing) It would show (and I believe I'd get) 4.5 to 5+ hours of battery life. After calibration it's usually less than 4 hours, 3.5 if I'm lucky, even when it's idle. ???
QUOTE Thanks
Sur3Mac

 
Sur3Mac's Avatar
 
Member Since: Aug 03, 2009
Location: The Netherlands
Posts: 1,563
Sur3Mac is a jewel in the roughSur3Mac is a jewel in the roughSur3Mac is a jewel in the rough
Mac Specs: Late 2011 MBP 13" i5/16GB RAM,Early 2007 MB white 13", 2x TV 3rd Gen, ᣦ

Sur3Mac is offline
It was probably just mis-calibrated before and "thought" it contained more juice than it did.
So while the battery may 'appear worse' after calibration, it's not.

Regards...

QUOTE Thanks
pskim586

 
Member Since: Sep 14, 2009
Posts: 6
pskim586 is on a distinguished road
Mac Specs: 13" 2.26ghz Unibody Macbook Pro 2gb Ram

pskim586 is offline
Hm.. I experienced the exact same thing also and mine is just 6 days old. Prior to calibration it showed it as having 5525 mAh but after calibration it decreased significantly to around 5300, but it didn't stop there, it kept dropping and went down to 5199 mAh all in about 2 days. I took my Macbook Pro 13" to the Apple store and they replaced the battery for me becaues they said 97% was within specs but mine was at 95%, but I don't think it's any better.

I'll have to wait and see within the next day or two to see if I experience the same thing.

And the thing is, it's not even that it's "showing less" or "showing actual" because of it possibly being "mis-calibrated", I actually got less operating time on the Macbook after calibrating, and even with the new replaced battery, I'm not getting the same usage time as I did when I first charged the Macbook out of box and used it.
QUOTE Thanks
pskim586

 
Member Since: Sep 14, 2009
Posts: 6
pskim586 is on a distinguished road
Mac Specs: 13" 2.26ghz Unibody Macbook Pro 2gb Ram

pskim586 is offline
Oh and significant drop in usage time as in, prior to calibration with no applications running and the screen set at what it was default on BRAND new start up, it showed near 7 hour 30 minute operating time after the FULL charge. After calibration, at full charge it states that operating time is at around 5 hours 50 minutes. I don't think that's exactly "normal" being that I technically lost an hour and 40 minutes of use time and it being way below the advertised useful time [and I know the stated use time isn't under much load]
QUOTE Thanks

Post Reply New Thread Subscribe


« Closing lid/playing iTunes | Macbook battery is dead! »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
the battery life may not be that much better but.. theraker007 iPhone Hardware and Accessories 1 07-13-2008 12:13 AM
Mbp Battery Life whitetar Apple Notebooks 15 06-11-2008 06:19 PM
Panther, Older G4 Powerbooks and battery life cmputercat Apple Notebooks 7 01-05-2004 12:21 PM
Panther, Older _G3_ Powerbooks and battery life paulcone Apple Notebooks 0 11-22-2003 03:01 PM
battery life montymac Apple Notebooks 2 11-11-2003 08:26 AM

All times are GMT -4. The time now is 02:27 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?