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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

when to change battery on Macbook Pro?


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mikehende

 
Member Since: Dec 11, 2008
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4-5 year old machine battery is giving 2-2 and 1/2 hours or so under constant use and over 5 hours idle, the owner says she used to get more than the 2-1/2 hours when bought brand new and wonder if she should replace the battery?

oh, these are the battery specs:

Charge info:
charge remaining 2723
fully charged NO
Charging NO
Full Charge Capacity 3831

Health Info:
Cycle Count 739
Condition Service Battery
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pigoo3

 
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Quote:
Originally Posted by mikehende View Post
4-5 year old machine battery is giving 2-2 and 1/2 hours or so under constant use and over 5 hours idle, the owner says she used to get more than the 2-1/2 hours when bought brand new and wonder if she should replace the battery?
With my personal needs...still getting 2.5 hours on a full charge would be fine with me. But everybody's needs are different.

This is the basis for when a battery needs to be replaced. When the total runtime on a full charge does not meet the needs of the owner.

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
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mikehende

 
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Agreed, thanks!
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osxx

 
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What Nick said plus I occasionally look at the condition of the battery in About This Mac under Health In System Info.
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mikehende

 
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well this shows "service battery", how in world do you service a battery?
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harryb2448

 
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Download CocunutBattery and run that to gauge the health of your battery:-

coconutBattery 2.8 - by coconut-flavour.com

Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!
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mikehende

 
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cool, thanks!
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VAMountaineer

 
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Quote:
Originally Posted by mikehende View Post
4-5 year old machine battery is giving 2-2 and 1/2 hours or so under constant use and over 5 hours idle, the owner says she used to get more than the 2-1/2 hours when bought brand new and wonder if she should replace the battery?

oh, these are the battery specs:

Charge info:
charge remaining 2723
fully charged NO
Charging NO
Full Charge Capacity 3831

Health Info:
Cycle Count 739
Condition Service Battery
1. expected battery life on a Lion or Lipo is ~500 cycles... you've done well!
2. if it says "service battery", it's time
3. you need a triwing screwdriver for most of the unibody macbook pros'
4. make sure you buy an original replacement (OEM) , NOT a knock off... there are only a couple vendors selling real apple batteries online.. amazon is a good start, but check the reputation & feedback to know for sure!!
if it's an older macbook pro (pre-unibody---ie 2006-2008) you're going to have trouble finding a good battery anywhere....
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techiesteve

 
Member Since: Apr 24, 2009
Location: UK
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Quote:
Originally Posted by VAMountaineer View Post
if it's an older macbook pro (pre-unibody---ie 2006-2008) you're going to have trouble finding a good battery anywhere....
Apple still sell these, even for vintage 2006/7 models, as the same battery is used in supported 2008 models. Once the 2008 models are vintage, then no more from Apple. UK price 101.00, an expensive outlay if a vintage model with minimal value, especially if the original still has useable life.

Steve Bell
UK
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