LOL! Not just a commuter, but specifically a commuter on a train! Now, finding out which train will take some research!
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82% battery on Mid-2012 MBP 13''
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LOL! Not just a commuter, but specifically a commuter on a train! Now, finding out which train will take some research!
If you really think "unplug it every few days and run on battery for several hours" is even remotely close to what that support document described, then I don't know what else to say.
Have a good day.
LOL! It's not supposed to be close, as they describe two entirely different scenarios.
You have a great day, too!
Huh? We were talking about what to do if you leave your battery plugged in all the time. Your FAQ says "unplug it every few days and run on battery for several hours, then plug it back in"... and the Apple support page says nothing even close to that. That is my point.
The statement on the Apple site refers to an ideal situation, where a notebook is used on battery daily, for example on a train commuting to work. The statement by the AppleCare support team refers to someone who uses their notebook plugged in most of the time. That's two different scenarios.
I am not comparing scenarios. I never compared anything to the commuter scenario. Apple mentions you should not run on battery all the time (quote below), then goes on with the ideal commuter scenario. They do not say anything about "unplug it every few days and run on battery for several hours, then plug it back in" if you are always running on battery. That is my point.
Since you accumulated over 300 cycles in less than two years, it seems you are already using it on battery every other day. So there is no need to take extra action.
In my experience, the small discharges to 95% happen either under very heavy load, or when the machine is put to sleep. The battery doesn't charge back to 100% until it drops below some threshold (probably 95%), to avoid short charge cycles. This has already been explained.
Now, coming back to that 2 years warranty, we can directly go to the Apple website:
http://www.apple.com/uk/legal/statutory-warranty/
In particular interesting here is footnote 1:
Now as your battery was apparently not defective on delivery (100% health), and since in addition it is a consumable, you will have a very hard time with asking for a free repair. Just trying to be realistic here.
Still it can't hurt to show it to some genius, maybe you are lucky.
If it would drop below 80% and show a "service battery" status before getting anywhere near 1000 cycles things would look a bit different, but this is not (yet) the case.
In my experience, the small discharges to 95% happen either under very heavy load, or when the machine is put to sleep. The battery doesn't charge back to 100% until it drops below some threshold (probably 95%), to avoid short charge cycles. This has already been explained.
Now, coming back to that 2 years warranty, we can directly go to the Apple website:
http://www.apple.com/uk/legal/statutory-warranty/
In particular interesting here is footnote 1:
Now as your battery was apparently not defective on delivery (100% health), and since in addition it is a consumable, you will have a very hard time with asking for a free repair. Just trying to be realistic here.
Still it can't hurt to show it to some genius, maybe you are lucky.
If it would drop below 80% and show a "service battery" status before getting anywhere near 1000 cycles things would look a bit different, but this is not (yet) the case.
The Apple site does not say that, but AppleCare support did. It's really not a big issue. "Every few days" and "several hours" are both nonspecific, which is exactly the point: There is no specific formula for exercising the battery, other than to use it on battery from time to time. A little bit of common sense and reasoning skills would lead one to understand that it takes more than a minute to exercise the battery, and less than fully draining it on a regular basis. You've been on this forum long enough to understand this, so I'm guessing this is more about trying to find fault with my posts, as you've done frequently in the past.
You really should try and not take comments on a little Internet forum so personally.
The point of the commuter scenario is that it is equivalent to taking it off the charger and letting it drain a bit (at least 20% - IMO) every few days (in this case, every day).
Btw I read this entire thread. Miscommunication goes way too far on this forum
Well then this is quite interesting:
Using coconutBattery 2.8 early yesterday, Battery Capacity was 83% on
232 cycles, fully charged.
Ran it completely down on battery and let it sleep for several hours as per
the "calibrate battery" instructions at Apple.
Now at 233 cycles the capacity reads 87% !!
Perhaps just a fluke OR the calibrate procedure is worth doing now and then?
Martin.
Using coconutBattery 2.8 early yesterday, Battery Capacity was 83% on
232 cycles, fully charged.
Ran it completely down on battery and let it sleep for several hours as per
the "calibrate battery" instructions at Apple.
Now at 233 cycles the capacity reads 87% !!
Perhaps just a fluke OR the calibrate procedure is worth doing now and then?
Martin.
Last edited:
Calibration didn't change your capacity. It only makes readings more accurate, and it's not recommended on newer Apple notebooks with built-in batteries. Fully draining the battery is not good for it, and there's no benefit to be gained.
I drained it until it shut down, then let it sleep for 5 hrs !!
OK, then my readings are more accurate, if there's really no benefit then I won't do that
a second time.
I've called apple, they told me that with 330cycles I should be AT LEAST at 85% of capacity.
If I'd been in the 1st year of warranty they would surely have changed the battery, by being on the second year he didn't know what the warranty laws were in Italy.
I've scheduled an appointment at the apple store
If I'd been in the 1st year of warranty they would surely have changed the battery, by being on the second year he didn't know what the warranty laws were in Italy.
I've scheduled an appointment at the apple store
they ran the diagnostic and found out that the battery is at 86.5% and not 82-83%.
My battery has 4792mAh of capacity, coconutbattery, iStatPro and battery healt status assume that the original capacity was 5770mAh so 4792/5770 is 83%. The official diagnostic does not say what the original capacity should be but says it has 86.51% of capacity left, so 4792/5540= 86.5%
Apple says my mac should have 5540mAh of battery, third party software say it should be 5770, who is wright?
My battery has 4792mAh of capacity, coconutbattery, iStatPro and battery healt status assume that the original capacity was 5770mAh so 4792/5770 is 83%. The official diagnostic does not say what the original capacity should be but says it has 86.51% of capacity left, so 4792/5540= 86.5%
Apple says my mac should have 5540mAh of battery, third party software say it should be 5770, who is wright?
I would imagine Apple is correct. If the dot was in the red or at least right on the border there's a larger chance they'll replace it. That's what happened with me.
Sometimes batteries come with more MAh then rated, so softwares can give false readings. Which is why apple will only look at system report or via their tests. If it passed their test then i would not worry unless you have performance issues. However i would say for the amount of charge cycles your health as dropped down considerably. My early 2013 retina has about 460 cycles and 93% health left according to coconut battery, the laptop sees around 2-3 charge cycles daily mostly, but its cause i have to be away from power sources most of the times.
