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mag2001

macrumors 6502
Original poster
May 24, 2007
268
70
San Antonio, TX
100 cycles on my MacBook 12inch and my battery is at 84% health. Is this normal? My battery also drains when not in use. I was at 50% when I went to bed and next morning it was completely dead.
 

FilmIndustryGuy

macrumors 6502a
May 12, 2015
612
393
Manhattan Beach, CA
I'm at 82 cycles and 92% but it fluctuates over time. the dead laptop while closed sound like an issue. charge it up and check again in morning. if it drains that fast either u set it to not sleep or take it to apple so they can run a test if battery is dying.
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,164
581
Finland
It's not normal. The battery should be able to withstand 1,000 cycles at 80% health. There have been reports of 12" MacBook having defective batteries and it looks like you have one.

For what it's worth, my 2016 is at 93% health after just 33 cycles, so looks like I'm on the same boat...
 

mattopotamus

macrumors G5
Jun 12, 2012
14,211
5,033
Actually it is not technically defective. Until you are lower than 80% with less than 1000 cycles, apple is probably not going to do anything. Just keep an eye on it. I have had macs drop to the mid 80's before reaching 100 cycles and stay there for well over 1000
 

FilmIndustryGuy

macrumors 6502a
May 12, 2015
612
393
Manhattan Beach, CA
It's not normal. The battery should be able to withstand 1,000 cycles at 80% health. There have been reports of 12" MacBook having defective batteries and it looks like you have one.

For what it's worth, my 2016 is at 93% health after just 33 cycles, so looks like I'm on the same boat...

ah, I had the same thing happen and then it went up later. Do a full charge, discharge cycle and see how the percentage life increases. It moves around before 100 cycles. A good indicator of a battery becoming faulty is when the mac discharges big time overnight or if the percentages move around out of whack. Also if you hit 20% and the mac just dies on you. If u go to apple, they will run a test and tell you if your battery is malfunctioning. They are nicer about everything if you have purchased apple care form my experience.
 

polee

macrumors 6502a
Jul 22, 2008
652
360
It's not normal. The battery should be able to withstand 1,000 cycles at 80% health. There have been reports of 12" MacBook having defective batteries and it looks like you have one.

For what it's worth, my 2016 is at 93% health after just 33 cycles, so looks like I'm on the same boat...
So this happens with the Macbook 2016 too...
 

SBruv

macrumors 6502a
Sep 25, 2008
631
292
I had the same problem with my 2015 rMB. Took it to the Apple Store who replaced the battery. The new battery did the same thing, so back I went to Apple, who diagnosed a voltage fault on the Logic Board and replaced the battery and the board.

Now, on my third battery and second logic board, the same thing is happening again. I'm at 96% after six cycles.

There's clearly an issue with the rMB battery in general. Can anyone report figures given by Coconut Battery for their rMB that aren't dismal..?
 

polee

macrumors 6502a
Jul 22, 2008
652
360
It looks like many if not all have the battery issue with the rMB 2015. Mine is 13 months old, 64 charges and about 4840 mah or thereabouts. Slightly above 90 percent.
 

sdfd504

macrumors regular
Jul 16, 2007
229
8
Soddy Daisy, TN
Mine is 2015 first release model that I just had to send off for a new battery. 103 cycles and the service battery indicatior was on instead of it showing the battery charge percentage. Ended up being below 70% with a 5-7 day turnaround time for the repair since they can't do them in store.

Mine was a month out of warranty but I had called apple care twice prior to the warranty expiring with complaints on my battery which helped me out with this repair. I can foresee a major recall on these batteries at some point soon.
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,164
581
Finland
I had the same problem with my 2015 rMB. Took it to the Apple Store who replaced the battery. The new battery did the same thing, so back I went to Apple, who diagnosed a voltage fault on the Logic Board and replaced the battery and the board.

Now, on my third battery and second logic board, the same thing is happening again. I'm at 96% after six cycles.

There's clearly an issue with the rMB battery in general. Can anyone report figures given by Coconut Battery for their rMB that aren't dismal..?

For what it's worth, mine was at 93% a week ago, but for the past few days it's been fluctuating between 95-96%. So as someone said above, give it some time as it will fluctuate a lot in the beginning. If it drops to low 80s and below, then you have a serious issue and it needs replacement.
 

SBruv

macrumors 6502a
Sep 25, 2008
631
292
For what it's worth, mine was at 93% a week ago, but for the past few days it's been fluctuating between 95-96%. So as someone said above, give it some time as it will fluctuate a lot in the beginning. If it drops to low 80s and below, then you have a serious issue and it needs replacement.

I wish that were the case, but in my experience of three batteries, now, the trend is rapidly downward.

Now at 95% after 7 cycles. Ridiculous…
 

objektør

macrumors 6502
Nov 25, 2014
273
24
At home
It is definitively fluctuating a lot for everyone it seems. Some more, some less. I almost consider my self as lucky: I have been down at 82% health but now back again at 88%. 14 months old and at 286 cycles.
I don't experience any trouble in real time use though. I use it as it fits me. Charge when possible, on battery when not. Still lasts me through the day when I can keep screen brightness at 50-75%.

I wondered what happens if this service indicator comes up. Can you still use it on charge than?
My gf old MBP (2009) had a bad battery after 4 years of use. I didn't bother to shift it straight away but after a while she got an issue with the trackpad and cd drive. I figured it could have to do with the expanded battery and put a new battery in it. Issues solved.
Could a bad battery in the rMB cause any problems (apart from reduced battery time)?
 
Last edited:

sdfd504

macrumors regular
Jul 16, 2007
229
8
Soddy Daisy, TN
Mine had the service battery indicator instead of showing the battery percentage. It charged and worked as normal but had a very poor discharge rate.
 

AppleWarMachine

macrumors 65816
Sep 27, 2011
1,075
614
Michigan, US
I'm at 85 cycles with 85.6% health, but I'm not too worried because I have AppleCare, which will replace the battery if it drops below 80%, but still not a good sign :(
 

objektør

macrumors 6502
Nov 25, 2014
273
24
At home
still 14 months old but at 296 cycles and health at 91,5% now, coming from 88% for a few weeks ago (at 286 cycles) and even been as low as 82% a couple of months ago.
Last few days it's been used heavily on rendering animations in Keynote, iMovie and Sketchup. Battery got quite warm but health went up to 92%.
I don't try to understand. I just use it as it pleases me (and I don't even have Applecare!)
 

asfalloth

macrumors regular
Dec 4, 2013
219
154
London
Mine has been awesome thus far, early days though, had a few deep discharges on this one too. Two weeks old.

Screenshot 2016-07-09 08.43.26.png
 

dilinger

macrumors member
Mar 21, 2016
34
16
b7a9d50d5d55bbf99ea82902f9a2788a.jpg


Don't wish to be out of topic as this is an MBP
But which bar is the battery health? First or second?
And is this considered healthy?

Many thanks!!!
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,164
581
Finland
b7a9d50d5d55bbf99ea82902f9a2788a.jpg


Don't wish to be out of topic as this is an MBP
But which bar is the battery health? First or second?
And is this considered healthy?

Many thanks!!!

Second i.e. the health is at 78.8%. It should be good for 1,000 cycles at 80%, so it's not ideal.
 

icymountain

macrumors 6502
Dec 12, 2006
466
464
I remember seeing average battery health curves on Coconut-battery online, but cannot find them anymore. I can just see the average for my laptop, when I upload my curve, but I cannot select any laptop and see its curve.
Out of curiosity, could someone upload the curve that shows for the Macbook Retina ? That would give a fair sense whether they die out more quickly than other macs or not...
 

Samuelsan2001

macrumors 604
Oct 24, 2013
7,730
2,152
Second i.e. the health is at 78.8%. It should be good for 1,000 cycles at 80%, so it's not ideal.

Yeah but this battery is six years old, that 1000 cycles is nowhere near as important as age despite what many believe. Apple only give that 1000 cycles warranty to 80% within their warranty period 3 years.
b7a9d50d5d55bbf99ea82902f9a2788a.jpg


Don't wish to be out of topic as this is an MBP
But which bar is the battery health? First or second?
And is this considered healthy?

Many thanks!!!

Dilinger your battery is in great health for its age but watch for swelling or other issues as it is now getting to the will need replacing soon stage and battery swelling or leakage can destroy your laptop.
 

dilinger

macrumors member
Mar 21, 2016
34
16
Yeah but this battery is six years old, that 1000 cycles is nowhere near as important as age despite what many believe. Apple only give that 1000 cycles warranty to 80% within their warranty period 3 years.


Dilinger your battery is in great health for its age but watch for swelling or other issues as it is now getting to the will need replacing soon stage and battery swelling or leakage can destroy your laptop.

My friend this battery is a replaced one, dated as you can see, on December 2014...

Not even 2 years old.

I get it you were confused by the age of the laptop, but I had it replaced..
 

gooseta

macrumors member
Jul 9, 2015
86
28
London, UK
My rmb's battery life has fallen significantly, now getting like 4 hours as opposed to 8+ previously. 247 cycles, 84% health, can't get a replacement. Has anyone else experienced similar degradation?
 
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