How do you know if your MacBook Pro battery has been calibrated?

Jhonvomer

macrumors newbie
Original poster
Jan 21, 2012
1
0
It is a 13 inch macbook pro. Do you guys know any way to improve battery life?
 

Shrink

macrumors G3
Feb 26, 2011
8,931
1,606
New England, USA
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.

This should answer most, if not all, of your battery questions:
Once again, thanks for the information. I have MBP, early 2011 model. I keep it lugged in to AC all the time. I read some instructions saying if one keeps it plugged in it's good to do a full calibration monthly. As part of my monthly "housekeeping", I did a full calibration, PRAM reset, and disc utility/repair.

Reading the link (the first link [" do not require regular calibration"] in your post didn't connect) "Apple Notebook FAQ", do I understand correctly that I don't need to do full monthly calibration, just unplug the computer every three days or so and drain it to about 50%, and then plug in again?

Just want to make sure I'm understanding correctly.

Thanks again...:D
 
Last edited:

GGJstudios

macrumors Westmere
May 16, 2008
44,428
796
Once again, thanks for the information. I have MBP, early 2011 model. I keep it lugged in to AC all the time.
The AC POWER section of the FAQ addresses this. You should run a while on battery every few days to keep it healthy. Just unplug while you work, then plug back in a few hours later.
I read some instructions saying if one keeps it plugged in it's good to do a full calibration monthly.
No, the instruction is to cycle the battery at least monthly, not to calibrate it. The WHAT IS A CYCLE? section of the FAQ will explain how cycles work.
As part of my monthly "housekeeping", I did a full calibration,
You don't need to calibrate your battery. Read the link I posted earlier. If it doesn't work when you click on it, keep trying. Apple is having problems with its site recently, so you have to retry Apple links several times before they work, but the link is good. Reset your browser, clearing your cache.
PRAM reset
PRAM/NVRAM has nothing to do with battery/power/charging issues. Resetting it will not help. Only resetting the SMC addresses such issues.
and disc utility/repair.
Some people repair, or recommend repairing permissions for situations where it isn't appropriate. Repairing permissions only addresses very specific issues. It is not a "cure all" or a general performance enhancer, and doesn't need to be done on a regular basis. It also doesn't address permissions problems with your files or 3rd party apps.

Five Mac maintenance myths
Disk Utility repairs the permissions for files installed by the Mac OS X Installer, Software Update, or an Apple software installer. It doesn’t repair permissions for your documents, your home folder, and third-party applications.

You can verify or repair permissions only on a disk with Mac OS X installed.
Does Disk Utility check permissions on all files?

Files that aren't installed as part of an Apple-originated installer package are not listed in a receipt and therefore are not checked. For example, if you install an application using a non-Apple installer application, or by copying it from a disk image, network volume, or other disk instead of installing it via Installer, a receipt file isn't created. This is expected. Some applications are designed to be installed in one of those ways.

Also, certain files whose permissions can be changed during normal usage without affecting their function are intentionally not checked.
There are times when repairing permissions is appropriate. To do so, here are the instructions:
If repairing permissions results in error messages, some of these messages can be ignored and should be no cause for concern.
Reading the link (the first link [" do not require regular calibration"] in your post didn't connect) "Apple Notebook FAQ", do I understand correctly that I don't need to do full monthly calibration, just unplug the computer every three days or so and drain it to about 50%, and then plug in again?
Yes, that's correct. It can be 50% or 30% or 80%.... doesn't matter, as long as you're giving the battery a reasonable amount of use.

Hope that helps!
 

Shrink

macrumors G3
Feb 26, 2011
8,931
1,606
New England, USA
The AC POWER section of the FAQ addresses this. You should run a while on battery every few days to keep it healthy. Just unplug while you work, then plug back in a few hours later.

No, the instruction is to cycle the battery at least monthly, not to calibrate it. The WHAT IS A CYCLE? section of the FAQ will explain how cycles work.

You don't need to calibrate your battery. Read the link I posted earlier. If it doesn't work when you click on it, keep trying. Apple is having problems with its site recently, so you have to retry Apple links several times before they work, but the link is good. Reset your browser, clearing your cache.

PRAM/NVRAM has nothing to do with battery/power/charging issues. Resetting it will not help. Only resetting the SMC addresses such issues.

Some people repair, or recommend repairing permissions for situations where it isn't appropriate. Repairing permissions only addresses very specific issues. It is not a "cure all" or a general performance enhancer, and doesn't need to be done on a regular basis. It also doesn't address permissions problems with your files or 3rd party apps.

Five Mac maintenance myths


There are times when repairing permissions is appropriate. To do so, here are the instructions:
If repairing permissions results in error messages, some of these messages can be ignored and should be no cause for concern.

Yes, that's correct. It can be 50% or 30% or 80%.... doesn't matter, as long as you're giving the battery a reasonable amount of use.

Hope that helps!
Wow, terrific post. Wonderful information, as usual.

You're a mensch. ***Pinches cheek***

Thanks so much for your time.:D
 
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