Apple Event: May 7th at 7 am PT
In the first week of July I purchased my MacBook Pro. Since then I have noticed that the battery health is steadily decreasing. It went down from 100% to about 96%. I would have not cared but my iPod touch is little over 6 months old and the battery health is 98%! So this gives me cause to worry. Any help here?
MacBook Pro, Mac OS X (10.6.8), 13 inch 2011
Already did that twice.
Hi, can i just ask do you need to calibrate the Macbook pro battery?? my brand new Macbook pro arrived yesterday (i'm using it now) and i havent calibrated because i read that the 2010 and later models come pre-calibrated.
The batteries are factory tested with half charge... not really fully calibrated... (as far as I know) 😐
The first time you use it you must calibrate it. When you get it just let it charge for a few hours and then let it drain. let it rest for a few hours and then charge again...
It really doesn't hurt to calibrate, it is worst to be sorry later...
This is the Apple pge that i got the info about not calibrating (look bottom of page) http:/http://support.apple.com/kb/HT1490 maybe i'm mistaken, in which case i will calibrate as soon as possible.
Well, alright, That's something new to me... 😁
That's great... then don't worry about it...
I did calibrate mine just in case... LOL...
It's all new to me because i'm a new Mac user and this is my first Macbook pro 🙂 so i'm confused on what i'm suposed to do. I'm kind of a little OCD at the moment with it. My Macbook pro is going to be used for University (when i start in September) so i want the best battery performance i can get 🙂
You can use about 1000 cycles before you are at the 80% level.
You will see in Coconut that the "health" level varies a few percent sometimes when you charge from different discharge levels.
Nothing to worry about IMO.
Calibration every one or two months.
When overnight at sleep you can disconnect the charger, if you are not using the MBP for a longer time, you store it whith the battery only having half charge.
Ok thank you for the advice! If i use my Macbook pro on the mains (plugged in) after its charged to 100% will it harm the battery?? becasue i was thinking of doing that so as the battery lasts longer and i have power for when i use it on the batter (At University)
Hi Dave,
No it will not harm the battery when you leave the charger always in. It will not give the battery a longer life nor a shorter life. However if you have the charger in always (like I do), once in a while just disconnect it for half an hour or so , and put the charger in again when battery is below 95% (otherwise the charger will not start charging), and once per one or two months do a battery calibration.
Ok, i dont plan to have it running off the mains all of the time (university will obviously use the batery power on the bus and in lectures) but when im not "out and about" i will plug into the mains. I'm hoping to get a good battery life out of the machine. Thank you for your help and advice it has cleared up a few questions i had 🙂
My MBP's battery health decreasing rapidly
