Correct battery clibration after replacement

"S W

@avanteguarde


Rep: 46.7k




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91"

Apple no longer recommends “calibrating” batteries on Unibody MBs or newer. The batteries are smarter now.

"I have the same problem, slightly different parameters. Factory battery didn’t offer even 90 minutes of run-time and would suddenly die, so I wanted to replace it (laptop was purchased from OWC). I also managed to wrestle a replacement battery from them as this used laptop did NOT provide the battery life they said it did…. but it was a HUGE fight… System Reports “Service Battery”. They had me chase my tail for a while, making me run that useless coconut battery app… so I jumped through all the hoops they required (hoping I’d just go away) but I’m a tech and persisted through it all.

The replacement battery shows 1% charge… I think it came with about 5-9%, OS 10.13 shows AC 85W adapter is connected, I can see ALL battery info in System Profile, but the NEW battery is “Not Charging” and “Replace Now” message is also present .

No SMC, PMU or PRAM etc resets change the status. The AC adapter is orange to suggest the battery is charging, but it never does. Either OWC sent me a door-stop instead of a new replacement battery OR there’s something wrong with the PMU hardware of the logic board. No amount of “typical apple keyboard witchcraft” has worked to solve this problem. Putting the old battery back in, and it works just as it always has (poorly)… says it has a long run-time, but dies prematurely, suddenly and without warning about 70min into use. This will be the last apple laptop ever in my household.. already moved away from iPhones 3 years ago… so this next move with their generation after generation of faulty laptop batteries wasn’t entirely unforeseen in driving me away.

I agree with others as well on the topic: what a ridiculous process one must endure to replace a component we KNOW will need replacing in 3 years at MOST… lets all just be thankful Apple doesn’t spec and commision the mfg of batteries in Tesla cars or electrification of the automobile would FOREVER elude humanity :-/"

"I am having the same problem. Mid 2009 Macbook Pro, running OSX 10.11.6, obsolete, no longer Apple supported. My original battery lasted 10 years, needed it replaced. I followed all the instructions as to calibrating the battery and resetting SMC and PRAM. It now sleeps at 80% of charge. Sometimes a key stroke will wake it, sometimes not. It always wakes after closing the lid and waiting a good 30 seconds for whatever unfinished sleep process to complete. If I continue to wake it in this manner, eventually the charge will fall below a certain percentage and it will run until the battery depletes itself. That charge level is somewhere around 77-78%.

I have not tried the above option yet. The logs clearly shows that the power management system knows that the battery has 80% of charge remaining. So the issue is originating somewhere else. I have performed multiple SMC resets, both by a.) removing the power source and the battery connection and, b.) through the shift-control-option-power key combination while off. Setting hibernatemode to 25 might be a quick fix, but it doesn’t resolve the issue. There is a setting somewhere else that is telling the computer to sleep at 80%."

"I'm having the same problems with a MacBook Pro 2011 I dusted off the logic board. All battery connections and all power supply connections. The battery is not charging properly. The replacement battery is not the best quality, this is another problem. So I built my own battery: I replaced the battery cells. I found a bad wire on the battery so I renewed the bad contact. It's been 2 days and sometimes the battery works a little. I think the MacBook Pro 2011 is not a good MacBook Pro. It has a lot of problems. My Macbook Pro 2012 works very well. My Macbook White 2010 works perfectly. I'm using OS X Mavericks and I have no issues with OS X Mavericks. It works great. I only have a lot of problems with High Sierra and Catalina on Macbook Pro. I think the problem is with the newer Mac OS. and some macbooks don't work very well. When I find the battery problem I'll write how I fixed it ...-

Greetings…-

Nobody"