Battery Self Discharge Issues- Late 2013 13"MBPro Retina

obviously you never should have received a dead battery.

WHO installed it? was it a real Apple battery which contains microprocessor chips, or some 3rd party battery?

Brand loyalty has nothing to do with battery science, ....other than quality of manufacture (and excluding the onboard chips to report charge states of individual cells) a lithium battery is a lithium battery is a lithium battery

ALL of whom had 2 ot 3 charge cycles on them! Now the odds of something like that have to be outrageously astronomical!

Thats not true at all, a great deal of most units will register 2-3 charge cycles, it means absolutely nothing whatsoever.

Ive YET to see a single new Macbook without 2 "cycles" on it from box new. Charge cycles are a nasty myth of importance out there in the minds of people regarding batteries, it means utterly nothing except in very long term 'milage'. I can , if so inclined, destroy a battery with very low charge cycles.

Just as 10,000 miles on a car does not tell anyone that some horrible speed demon put those 10,000 miles on a car and rode it hard and abusively...........as an analogy. ........instead of a little old lady driving the car gently

The factory shipped one has a display that has a pink tint across the entire left side of the screen.

Thats a monitor feed issue or same connector at logic major hardware fault. Service must be rendered for that.

I read up more on LIthium Polymer battery since last eve. Amongst all the figures bandied, all of them agreed that the SELF DISCHARGE rate of such batteries cannot exceed more than 5% a month. I was losing between 3 to 8% A DAY

Two things here, a gelled polymer lithium has no diff. discharge rates than a convention lithium. LiPo is a mfg. technique for making modular lithium cells, its not "special" in specific to lithium chemistry use/ abuse.

5% a month most certainly CAN be achieved depending on temp. and humidity and parasitic discharge from the internal SMC which runs the clock, etc etc. (depending on make and model). So thats not true at all, regardless of whoever wrote that.

3 to 8% a day IS abnormal..............except for the fact that:-------

The time "remaining" estimate is (just that an estimate) is currently inaccurate in some instances in Mavericks, others report same and much testing on my own of several machines indicate the same.

This however does not affect the ACTUAL battery life.

😊

Hi there,

I've been reading this thread with much interest, as I've been experiencing much of the same issues as well with my brand new Macbook Pro Retina. I've posted about it here: https://discussions.apple.com/thread/5868176

and PlotinusVeritas is aware of the ongoing discussion.

My opinion is that there are a combination of factors at play here: Mavericks and the ongoing incorrect time remaining / percentage estimation that PlotinusVeritas has spoken about and that Apple is looking into as I understand, I think temperature is another key one - I find that the max capacity of my battery as reported by the system profiler increases as my Macbook warms up and the estimation of percentage I've seen change - even increase after a short while of calculating the time remaining. Last but not least, is user behaviour. I think all of us here are of the mindset to notice these things, whilst I think the majority of users use their machines daily without giving much thought to why the percentage has wavered a bit, or they just plug in their charger - or don't even have the percentage indicator up. So other people who experience this probably aren't worried about it.

I've been running a few tests. After an SMC reset, I find the battery drain whilst shutdown to be around 2-3% over 24 hrs. I acknowledged it might take a couple of percent off the mark to start or shutdown. If left for 48hrs I see a 6% decrease when shutdown. In sleep mode, I find it decreases by about 5% overnight.

Could we all have faulty machines/batteries? Perhaps, but this is my second Macbook Pro. The first I returned due to a faulty enter key, and I know that both of them are brand new from the factory. Both had 3 charge cycles on them, which I know to be normal. And both of them have experienced these same discharge issues (or inaccurate reporting of the battery percentage). Out of all of us here independently reporting the same or similar issue, I think we're all experiencing something that is not uncommon, and is surely more than likely software related. Our original poster here reported the same on 3 replacement machines (do we know what's happened to the latest replacement?) surely if this same phenomenon is present on so many replacement machines its either a serious hardware issue, or as is most likely, something software related?

We seem to be getting different messages from Apple Support as well, I ran this via front line myself and they said it was normal to experience this, even if I think it's weird. What would be good to ask others in this forum is to see themselves what happens if they shutdown their Macbooks, and if they see a similar battery drain overnight.

I'll leave my two cents there. Any opinions from others?

Cheers, Gopha

Hi,

The percentage shown by Mavericks is an estimation, therefore I don't rely on that.

I checked with Battery Health ( you can find it on the Mac AppStore ) and indeed there is a varying 0.3 - 3 % discharge over 24 hours of shutdown. It seems that after an SMC reset it does better, but it worsens after some time.

I hope this issue, even if it is minor, will be addressed and solved by Apple.

HI i got the same concern with my Mac and try to have apple recognize the failure of the battery

3% overnight discharge when shut down

at Genius Bar in France the battery was tested and is "very ok" only 29 cycles in 6 months

so back home with my problem

can you mail me the transcription of your apple expert recognizing the abnormality of a 3% self discharge in 24 hours

thanks for your help

<Email Edited by Host>

I have the same issue

3% discharge overnight shutdown

i did post a thread but was not satisfied with answers

genius bar did not recognize the problem as a defectious battery

i will continue to post to see if others have the same problem and alert others to check their mac

AAs I said it is an issue for me as I got to leave 6 weeks without my Mac and it will be fully discharged after a month