I'm kind of at a loss, honestly. Is this normal? At this rate, 100 charge cycles will take me to 0% battery health.
I'm kind of at a loss, honestly. Is this normal? At this rate, 100 charge cycles will take me to 0% battery health.
I would try the battery recalibration method. I did this on mine - a new 15" MacBook Pro (2012) and it increased to full charge capacity to about 71xx from 69xx. Still reads 71xx.
It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.I'm kind of at a loss, honestly. Is this normal? At this rate, 100 charge cycles will take me to 0% battery health.
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks. Also, calibration has zero effect on your battery's health. Read the Battery FAQ for details.I would try the battery recalibration method.
Do you mean let the battery completely discharge and wait till it charges 100%?
That is not the proper procedure for calibration. Before you give bogus advice, you should get the facts.In a nutshell, but you let it run all the way down until it hibernates on its own. Then you allow it to sit for 3-4 hours, then connect it and allow it to charge completely. Before you start the process, allow it to charge to 100% and allow it to remain on the charger for 4-5 hours after it reaches 100%.
From the link you posted:You will read many links and posts saying that it is not needed and is unnecessary, however I can speak from experience that it will make the battery meter more accurate and also show your full charge capacity more accurate.
Read here for more information.
http://support.apple.com/kb/HT1490
Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article.
That is not the proper procedure for calibration. Before you give bogus advice, you should get the facts.
From the link you posted:
I'm more interested in making sure people who read this forum aren't misled by misinformation than I am in making friends. People come here for help and accurate information. The procedure you described is not the proper procedure for calibrating a battery. In addition, calibration has no effect on battery health. It only makes the readings somewhat more accurate. It is absolutely unnecessary on newer Mac notebooks with built-in batteries, and doing so is putting cycles on the battery needlessly, with no meaningful benefit. I'll believe Apple, who makes the batteries, more than I'll believe any individual user.Wow - great way to make friends on the forum!
I know from personal experience that makes a difference and I know what the article says. It says in the article that it is not needed on models with non-removable batteries, and it is not required, but it does make a difference in the battery meter readings.
Please, believe what you wish. I have done this and I know what my experience was and am sharing it. I have also done this on a new ThinkPad and got the same results.
I'm more interested in making sure people who read this forum aren't misled by misinformation than I am in making friends. People come here for help and accurate information. The procedure you described is not the proper procedure for calibrating a battery. In addition, calibration has no effect on battery health. It only makes the readings somewhat more accurate. It is absolutely unnecessary on newer Mac notebooks with built-in batteries, and doing so is putting cycles on the battery needlessly, with no meaningful benefit.
I didn't call anyone a liar. I said that the procedure you claimed was calibration is, in fact, not the proper calibration procedure.That's all well and good. I have read many of your posts and you do generally give accurate information. But indirectly calling someone a liar that has first hand experience is not very professional.
Again, you're making up your own procedure. If you're going to calibrate a battery, the procedure you described will not do it. Read the CALIBRATION section of the Battery FAQ for the correct procedure.The notebook can be used during this time. The only inconvenience is allowing it to sit in hibernation for three or four hours.
Again, you're making up your own procedure. If you're going to calibrate a battery, the procedure you described will not do it. Read the CALIBRATION section of the Battery FAQ for the correct procedure.
I'm intimately familiar with the proper calibration method and, as I said before, the procedure you were suggesting was not accurate. No where in the Apple procedure that you quoted will you find the following:I hardly made this up.
Here is the procedure from the Apple document...
Nor will you find any mention of this:In a nutshell, but you let it run all the way down until it hibernates on its own. Then you allow it to sit for 3-4 hours, then connect it and allow it to charge completely. Before you start the process, allow it to charge to 100% and allow it to remain on the charger for 4-5 hours after it reaches 100%.
When giving instructions, it's far more beneficial to readers if you simply quote or link to the Apple document, rather than paraphrasing or estimating or guessing.The only inconvenience is allowing it to sit in hibernation for three or four hours.
I'm intimately familiar with the proper calibration method and, as I said before, the procedure you were suggesting was not accurate. No where in the Apple procedure that you quoted will you find the following:
Nor will you find any mention of this:
When giving instructions, it's far more beneficial to readers if you simply quote or link to the Apple document, rather than paraphrasing or estimating or guessing.
Models like the MBA and MBPr have a hibernation mode called "standby mode" that can last up to 30 days on a charge. That mode is not available on other MBPs. This is one reason why trying to calibrate a MacBook Air won't work correctly, since 5+ hours won't drain a MBA battery as much as it would drain the removable batteries that required calibration. Those calibration instructions were written before standby or hibernation mode even existed.Apple uses the term "go to sleep", but really when your Mac automatically sleeps from low battery it goes into a state that could correctly be called 'hibernation', where the contents of RAM are written to disk to prevent data loss.