MacBook Pro Retina Display Battery Health problem

Hello,


I was just wondering why my MacBook Pro 15" Retina Display, which is just 3 months old, would have only about 98% battery health after 23 cycles!

When i bought it i had ~102% so 8700mAh from 8500mAh! Now i can only reach 8349mAh anymore! Does anybody have the same issue or am I the only one with a bad battery in my MacBook? I know, that these numbers are not very accurate! But if there are missing 2% charge after 3 months...

Maybe it's only a similar problem to the following! I hope this will be fixed soon.


(If there are any Mountain Lion Developers in this forum... this is for you)

I also found a bug concerning battery charge! When my MacBook is fully charged, it says 100%, not really fascinating. But the thing is, it already shows 100% when there are only about 96% charge in the battery! So... I shut down my computer when the charging-light went green, reset the SMC and... wow... it's orange again!! So PLEASE fix this bug!


I don't know how to change system language so sorry for my german screenshot!User uploaded file

MacBook Pro with Retina display, OS X Mountain Lion (10.8.2), Battery Health/Charging

Posted on Nov 17, 2012 1:06 AM

Reply
3 replies

Feb 23, 2013 11:56 AM in response to geordie.lr

yeah... ahh... I'm not sure if you understood what i was aming for?

I just wanted to point out, that Mountain Lion shows a wrong percentage!

Look at my screenshots battery percentage shown by ML. After that calculate it on your own what battery info says... (green calc in the first screenshot)

While ML says 100% fully charged, battery info still shows that it's charging and if you divide the actual charged mAh by the maximum number, you will find out, that there is not 100% in the battery but ~95%!!

And this is what i don't really want to see... Mountain Lion believes the battery's maximum capacity is about 8000mAh, not ~8500mAh!!

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MacBook Pro Retina Display Battery Health problem

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