MacBook Pro Not Fully Charging

[bobbydd21]

Hey guys. I recently got a 15" rMBP and noticed something going on with the battery. The battery status at the top of the screen says it is charged 100%. However, when I look in battery health, as well as in the system profiler, it says that it is not charged to 100%. I uploaded a picture of this below. Also, when the MacBook Pro is unplugged, the percentage drops in Battery Health, but stays at 100% at the top of the screen. It eventually drops from 100% but does so after the battery has clearly been used a bit. Does anyone have any ideas on what the problem is or is this normal? Is it even worth bringing it to Apple? Thanks a lot!

 

[priitv8]

On mine, the menu bar reads 100% even when iStat Menus clearly shows still 30 minutes to full charge. So the menu percentage is definitley psychologically "adjusted".

 

[Yahooligan]

There's much more to charging the battery than simply charging it to 100% and keeping it there. Chances are the icon goes into a "dumb user" mode towards the end of the charge.

In order to try and maintain battery health it won't keep the battery at 100% if it's plugged in all the time, it will let the battery cycle. Over time you'll likely see it drop down to about 95% and then work it's way back up to 100% even though it was never unplugged and the charge status/LED never changed.

3rd party tools are probably reading the raw values and don't have the same logic as the menu icon. I wouldn't worry about it as I don't really see any problem.

 

[bobbydd21]

Oh okay thank you for the responses! I won't worry about it then. Sounds pretty normal it seems.