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MacBook Pro — How do you check battery health?

Hello,


I am confused as to what the "battery health" of my MBP is. I downloaded an app it told me it is 89% but it is not consistent with the cycles, mAh capacity, etc (it should be more?), so I am thinking the app might be innacure in reporting this (reviews say this). I just want to have a second source to see where I stand.


Any other ways/apps? Please let me know.


Thank you

MacBook Pro, Mac OS X (10.7.3), 17-inch: 2.4 GHz

Posted on Feb 13, 2012 8:21 AM

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Posted on Feb 13, 2012 9:15 AM

Click on the Apple:upper left" click about this mac, click more info. In the left colum under hardware, click power, this should give power/battery info.

7 replies

Feb 13, 2012 10:52 AM in response to NoteFiasco

"Health" is the remaining full-charge capacity in System Profiler > Power divided by the original average battery capacity for that model. Those originals are sometimes hard to find. I use Coconut Battery. It reads the Mac model and pulls its original capacity from its database to calculate and display Helath so you don't have to. It also lets you save the readings so you can spot trends that might indicate a failing battery


http://www.coconut-flavour.com/


Note that any calculation of battery health is only accurate to a couple of percent. The baseline or original value used is an average--new batteries do not have identical capacities due to the nature of the technology and their manufacturing techniques.

Feb 13, 2012 11:18 AM in response to NoteFiasco

Also, in systwm profiler it has a line that states batterry health, anything but normal should be sause for concern.


If you click on yhe battery icon on the top roght of your screen, click preferences you can have it display battery % left, although this is not totally accurate. Highest I've ever seen is 96%.


Also there is a awitch that will stop the charging rpocess, so as to not over charge the battery.

I run 10.6.8, and had abattery die and a warning window popped up saying there was a battery problem.


I wouldn't worry much till your battery stops holding carge for any reasonable amount of time.

MacBook Pro — How do you check battery health?

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