82% battery on Mid-2012 MBP 13''


dirtnnasty

macrumors member
Dec 16, 2013
87
0
I'm not sure, what you are doing, but you are doing something really wrong....

on my opinion your capacity drop is too heavy...
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
I tend to keep it powered with the power source when I'm at home (95% of the time). Is it better to run it on battery power even if I'm at home? Wont this increase my battery cycle drastically?
Is there a chart that lets you know if you are eligible with a replacement from apple?

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I don't think so, my mid 2012 mbp still charges to 5560mAh... Oh, it has 300 cycles too...
what is your use? we have roughly the same cycles and model (mid 2012)
 
Nov 28, 2010
22,668
27
located
Apple might get you a replacement when you have less than 80% capacity while having less than 1000 cycles.

______________________________________________________
This should answer most, if not all, of your battery questions:
Apple Notebook Battery FAQ by GGJstudios
The F.A.Q. includes the following topics:
  • BATTERY INFORMATION
  • BATTERY LIFE FROM A CHARGE
  • AC POWER
  • CALIBRATION
  • BATTERY LIFESPAN
  • CHECKING STATUS AND HEALTH
  • CHARGING
  • WHAT IS A CYCLE?
  • BATTERIES ARE NOT COVERED
  • BULGING OR SWELLING BATTERY

______________________________________________________

I have a 2009 MBP with less than 500 cycles and 85 to 82 % capacity. I do not mind yet. And probably never will.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
Apple might get you a replacement when you have less than 80% capacity while having less than 1000 cycles.

______________________________________________________
This should answer most, if not all, of your battery questions:
Apple Notebook Battery FAQ by GGJstudios
The F.A.Q. includes the following topics:
  • BATTERY INFORMATION
  • BATTERY LIFE FROM A CHARGE
  • AC POWER
  • CALIBRATION
  • BATTERY LIFESPAN
  • CHECKING STATUS AND HEALTH
  • CHARGING
  • WHAT IS A CYCLE?
  • BATTERIES ARE NOT COVERED
  • BULGING OR SWELLING BATTERY

______________________________________________________

I have a 2009 MBP with less than 500 cycles and 85 to 82 % capacity. I do not mind yet. And probably never will.
I'm at 82% not 79%, and in less than 4 month my warranty will expire, should I contact apple support now?
 

davidg4781

macrumors 68020
Oct 28, 2006
2,238
174
Alice, TX
I think mine was close to 80% after 2.5 years. I took it to Apple, they ran some diagnostic, and a couple of hours later I had a brand new battery.
 

thundersteele

macrumors 68030
Oct 19, 2011
2,984
7
Switzerland
I'm at 82% not 79%, and in less than 4 month my warranty will expire, should I contact apple support now?
What kind of warranty is this? 2 years only?

The battery seems to be at the low end of Apples own specifications (up to 1000 cycles with 80% charge remaining), so maybe it is a good idea to show it to Apple. But nobody here can guarantee you that it will be replaced.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
What kind of warranty is this? 2 years only?

The battery seems to be at the low end of Apples own specifications (up to 1000 cycles with 80% charge remaining), so maybe it is a good idea to show it to Apple. But nobody here can guarantee you that it will be replaced.
it's the standard (non apple-care) legal warranty for all goods sold in europe
 

p3ntyne

macrumors 6502
Jan 10, 2014
406
3
Sydney, Australia
I tend to keep it powered with the power source when I'm at home (95% of the time). Is it better to run it on battery power even if I'm at home? Wont this increase my battery cycle drastically?
Is there a chart that lets you know if you are eligible with a replacement from apple?

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what is your use? we have roughly the same cycles and model (mid 2012)
Light to heavy use, on charger ~70% of the day.
 

davidg4781

macrumors 68020
Oct 28, 2006
2,238
174
Alice, TX
did you have applecare?
I did. It was in the last month of AppleCare.

The graph they showed me showed my battery failing prematurely. I'm not sure if having AppleCare helped in this situation. On my previous MacBook I had a few batteries replaced outside AppleCare because it was either failing early or bulging. This was back around 2010/2011.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
I did. It was in the last month of AppleCare.

The graph they showed me showed my battery failing prematurely. I'm not sure if having AppleCare helped in this situation. On my previous MacBook I had a few batteries replaced outside AppleCare because it was either failing early or bulging. This was back around 2010/2011.
by close to 80% you mean 80+ or 80-? btw I have a call scheduled for wednesday and ask them
 

thundersteele

macrumors 68030
Oct 19, 2011
2,984
7
Switzerland
it's the standard (non apple-care) legal warranty for all goods sold in europe
You will be out of luck then, I think. Batteries are consumables, so I think they will be excluded from such warranties (like e.g. car tyres would be excluded). In addition the battery is still within specifications.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
You will be out of luck then, I think. Batteries are consumables, so I think they will be excluded from such warranties (like e.g. car tyres would be excluded). In addition the battery is still within specifications.
it is a consumable but it has consumed more than the normal rate. there is the problem...maybe at 82% I'm not legally eligible for a replacement but at 79 i SURE DO. on the apple website it states that the batterys are designed to hold at least 80% of the capacity in 1000 cycles (it does not say however if the 1000 cycles must be in the 2 year of warranty).
being very close to the limit, with a third of the stated cycles I expect they will replace the battery, if they don't I'll wait the 23rd month and try again hoping it wil have dropped under 80% by then
 

GGJstudios

macrumors Westmere
May 16, 2008
44,360
701
being very close to the limit, with a third of the stated cycles I expect they will replace the battery, if they don't I'll wait the 23rd month and try again hoping it wil have dropped under 80% by then
While you may get them to make an exception, usually Apple won't even look at it until the battery health is below 80%.
 

davidg4781

macrumors 68020
Oct 28, 2006
2,238
174
Alice, TX
by close to 80% you mean 80+ or 80-? btw I have a call scheduled for wednesday and ask them
I don't recall, could've been right at 80%, maybe 79%. The graph they showed me I think compared battery cycles to health. Health is supposed to decrease at a certain rate and mine showed it decreased much quicker.

I posted about it on here. Maybe you can try to find it? I'm about to leave to get my car registration right now but I can try looking for it later.
 

heisenberg123

macrumors 603
Oct 31, 2010
6,495
9
Hamilton, Ontario
I tend to keep it powered with the power source when I'm at home (95% of the time). Is it better to run it on battery power even if I'm at home? Wont this increase my battery cycle drastically?
Is there a chart that lets you know if you are eligible with a replacement from apple?

----------



what is your use? we have roughly the same cycles and model (mid 2012)
having it plugged in 95% of the time might contribute to the issue, I had a battery replaced once an one of the questions they asked was how often do I use it plugged in vs on battery, I am more of a 60/40 split
 

saturnotaku

macrumors 68000
Mar 4, 2013
1,924
51
having it plugged in 95% of the time might contribute to the issue
Doubtful. My MBP has been plugged in 95% of the time for the 18 months I've owned it, and its capacity is still above 95% Granted my battery has less than 100 cycles, but the OP's wear looks on the high side.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
having it plugged in 95% of the time might contribute to the issue, I had a battery replaced once an one of the questions they asked was how often do I use it plugged in vs on battery, I am more of a 60/40 split
I know but this is my main pc, should I cycle the battery even if I'm at home on the desk? I don't know what's worse, 95% of the time plugged in or 2-3 cycles A DAY
I thought that the oscillation of the battery from 95% to 100% was designed to keep the battery working while plugged in
 

GGJstudios

macrumors Westmere
May 16, 2008
44,360
701
I thought that the oscillation of the battery from 95% to 100% was designed to keep the battery working while plugged in
No, there is no such function. In fact, Apple charging technology is designed to avoid such short discharges/recharges. When your battery is fully charged, it stops charging and runs on AC power as long as it's plugged in. Only in rare circumstances will it draw power from the battery while plugged in.

Run on battery whenever you need to and plug it in whenever you can. You can plug or unplug any time you need to, regardless of the charged percentage, and you never need to completely drain your battery. Just make sure you don't run on AC power exclusively, as your battery needs to be used regularly to stay healthy.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
 

Husky1992

macrumors regular
Original poster
Aug 26, 2011
201
0
rome
No, there is no such function. In fact, Apple charging technology is designed to avoid such short discharges/recharges. When your battery is fully charged, it stops charging and runs on AC power as long as it's plugged in. Only in rare circumstances will it draw power from the battery while plugged in.

Run on battery whenever you need to and plug it in whenever you can. You can plug or unplug any time you need to, regardless of the charged percentage, and you never need to completely drain your battery. Just make sure you don't run on AC power exclusively, as your battery needs to be used regularly to stay healthy.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
:confused: I can assure you that my mbp fluctuates 95-100% while on charge
 

GGJstudios

macrumors Westmere
May 16, 2008
44,360
701
:confused: I can assure you that my mbp fluctuates 95-100% while on charge
That's either because you're running apps with enough power demands to draw on both AC power and the battery, or you have a loose connection somewhere between your charger and the logic board. Apple batteries do not do that by design. That's why if you plug in a battery that's already around 93-99% charged, it won't charge. Such short discharges/recharges are not good for the battery.