MacBook Air :: Battery Half Full But It Switches Off When Unplugged
May 1, 2012
My 10 month old Macbook Air 13" battery behaves weird every 4 weeks. When unplugged the MBA switches off suddenly without a warning even the battery is still more than half full. Plugging it in it tells it takes 20 hours for a full charge but never gets full. After unplugging it crashes after some minutes again and goes dark.
The battery' got 178 load cycles and 5675 mAh out of originally 6700 mAh (84%). Did several SMC resets and PRAM resets. I even reinstalled Lion from scratch without changing the battery's behavior. Calibrating the battery isn't possible because it does not discharge but crashes. I tried three different power adapters.
Info:
MacBook Air, Mac OS X (10.7.3)
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Dec 2, 2010
I have a late 2007 MBP 15inch 2.33Ghz Core 2 Duo. I have had since new and no problems. Over this last week I have had the same issue a couple of times. The MBP just switches itself off. The first time it did it, it was running on battery (I was using Aperture) and had 60% power available. It would refuse to re-start until I connected it to the mains and then it ran fine.
Then it did the same thing overnight at some point. I had left it connected to the mains (as I always do at home), had shut the lid to put it into sleep mode. When I came back it was switched off. No-one had touched it whilst I was away but yet it had just turned itself off.The only thing that I noticed was that when I started it up both times the little light on the magsafe connecter kept flashing between orange and green. However when the computer booted into OS X both times it showed a reasonable amount of power in the battery.
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Oct 5, 2009
I noticed that my battery cycle (according to istat) switches over at 15%. So as son as it switches over to the next cycle I plug in the adapter to make the battery run a cycle from 100%-0.(I know the cycle in 100%) But it still switches over at 15%, that means that the battery ran only 85% of its capacity. How can that be? Is it possible to reset (delete) battery cycle data?
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Aug 29, 2014
Log and capture sees my 2tb external drive as only having 1.9gb of space yet, when I check "Get Info" it says there is 886+gb of space available. The drive is not partitioned.
Info:
MacBook Pro, Mac OS X (10.5.8), G-tech external hard drive
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Dec 20, 2010
I usually use my laptop at a desk plugged into an AC outlet. Well I was going to be away for a week, so I unplugged it, when I came back, the battery went from 97%, not charging to 12% when I booted the laptop up again.
Also, can one continue using a macbook laptop if the battery is dead, but run it through or plugged into an ac outlet all the time?
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Jul 19, 2009
I was sick of the battery life I was getting on my 15" Macbook Pro 3,1 (early 2008 model), so I went to the apple store yesterday to get a new one. I was over 400 cycles, so I had to just buy it, they wouldn't replace it for me. I expected that, so no big deal. But I wanted to treat this battery right. I got home, charged it up to 100%, let it sit at that for a few hours, and then let it drain overnight and rest at empty for a few hours. This afternoon, I plugged it back in with the intention of letting it fully charge and thus complete my battery calibration, but at around 40% charged, the cat yanked the charger cable out from my laptop. And then a little bit later, my girlfriend did it again. So, has my time been wasted here? Battery calibration is such a pain in my rear. i hate it. I use my laptop often and expect it to be available to me whenever I need it, regardless of how many other computers i own. I really don't want to deal with it again in the near future. And I may not.
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Jan 10, 2010
I have a 3 1/2 year old Macbook, my Applecare has ran out. About six months ago my computer began shutting off immediately when unplugged. (Was letting my roomates use the computer, came home one day and it started doing this.) I believe that my battery is OK, it performs between 97% and 99% consistently. When I do the battery test, all of the lights light up.
I've read through the forums and it seems a lot of people are having this problem, but their batteries are bad. What are some options/solutions to this problem? I am willing to invest money wisely into the computer to keep it running smoothly for a while.
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Mar 19, 2012
I've tried two brand new adapters and neither work after my MBP is unplugged for a few hours and then plugged back in. Eventually it'll work again, but occasionally it doesn't acknowledge the power source. Will AppleCare cover this?
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Mar 22, 2012
I have an early 2011 MacBook Pro 15 in. that i got in May of 2011. When i unplug the power adapter it works fine, but at about 80% battery it shuts off. i go to turn it back on and it acts as if it is dead, i press the power button again and it turns on without problem (although the date and time at first is messed up). What is wrong? I recently had to get my hard drive replaced 2 months ago and it has been working fine until yesterday.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Feb 16, 2010
So I usually keep my UMBP plugged in at all times. It unplugged by accident and went to 99% so I left it unplugged but literally less then maybe 7 minutes my battery is already reading down to 92%. Brightness on screen is set all the way up, if that has anything to do with it.
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Mar 2, 2010
Firstly i have a MacBook 10.4.11 that is somewhere between 2 and 3 years old. I have had no problems with the Mac up until yesterday. Yesterday i was charging my Mac and everything was fine but i noticed that the MagSafe Adapter was lit up Green, even when unplugged from my Mac. I shrugged it off until this morning when i realised that when i unplug my adapter the Mac just turns off and won't turn back on until i plug the adapter back in. I have seen different threads about it being a battery problem or a charger problem but i am not sure where to start as most of the threads say that their Battery Icon on the Mac screen has a black "X" through it. Mine just has the Forks in the battery icon and where it would have a Time or % of what is left in the Battery, it just has a (Calculating...) and when i click to see how much it has charged, it says 0%
I also downloaded Coconut Battery and here is what it says:
Current Battery Charge: 0 mAh
Maximum Battery Charge : 5093 mAh
0%
Current Battery Capacity: 5093 mAh
Original Battery Capacity: 5020 mAg
100%
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Apr 5, 2012
I left my mac unplugged for 3 weeks and now the battery isn't recognized and is not charging. I have tried removing it, but that hasn't worked.
Info:
MacBook
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Mar 6, 2012
I keep getting a "startup disk is full" message on my MacBook, yet I have more than 50% of my 55gig HD empty. Haven't partitioned the HD. I've tried clearing the cache on my browser and running disk repair on the HD. I'm considering adding RAM (currently have 1 gig). I'm running 10.6.8.
Info:
MacBook, Mac OS X (10.5.8)
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Apr 2, 2007
I have an ibook G4 (2years old, a part of the battery swap program) that charges normally... for about twenty minutes. Then the light around the charger turns from it's normal "i'm charging" orange to nothing, the light goes out and the ibook switches to battery power. I've just inspected the power chord and there are no strains or tears, the plug at both ends are in good condition and the ibook power socket is fine too.
I've turned the ibook off for a period of time (two days) and reset the power manager... still no difference. The ibook looks and acts just like it should until about twenty minutes into the charge then the light turns off and it's like it's been disconnected. The chord is in correctly, i've even tried the apple extension chord = no joy. If i reconnect the power chord at the wall it's fine, starts charging again... and yes i've tried different sockets on different circuits in the house!
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Jul 21, 2009
I like to know something about charging my 13" MacBook Pro. If I charge my mac 50% or any other % and use it, I mean not fully charge, is there any problem. If I continue listen music or browsing internet or both together how long my battery will run normally. Also what about watching movie,normally can i watch 3dvd movie.
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May 28, 2012
My Macbook air only works for 2 1/2 hour at the battery, should be at least 5 hours?
Info:
MacBook Air, iOS 5.1.1
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Jun 20, 2005
My Powerbook G4 only turns on if the battery charger is plugged in, and if I unplug it, the computer shuts off. On the menu bar, it says charging. I know the battery has to be full. This just started happening last night. Also, I just had the hard drive replaced and I've only had it back for a couple weeks.
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Jan 18, 2010
I made the mistake of unplugging and removing the battery from my iBook while in sleep mode, to reinsert a screw I found on the floor. Now at startup it's stuck on the blue screen. I've tried several resets, icluding shift-command-option-power, zapping the PRAM command-option-P-R which got my "startup sound" back, which I let chime 3X, I reset the NVRAM, single user mode confirmed the clock was reset (to 1904) and an fsck said the system "Appears to be OK." I've had no luck with "safe boot," I have no reset button and no OS disk to boot from. Verbose mode prints up the same 10 lines over and over "(error) imprt: importer start failed for 89, invalid destination port, no such file directory, run loop could not be started." It's a 14" iBook G4 running OS 10.5.6. I don't mind if files are lost-there's nothing important on there.
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Apr 2, 2012
I have an early 2008 non-unibody MacBook Pro. For about a year now, the status of the battery has been "replace soon." I was still getting a pretty good amount of time off of one charge so I wasn't too worried. This past Saturday morning, I woke up, checked the battery indicator lights on my computer (it had been sleeping since the day before) and it said it had about 60% percent so I opened it. I was on the Internet for about 10 minutes before it shut off without warning.
It wouldn't turn back on when I pressed the power button, so I plugged it in and it turned back on. When I checked, the battery status was "replace now." After using it, I turned it back off and left for NYC for the weekend and didn't bring it with me. When I got home last night, I plugged it in and tried turning it on with no luck. The battery indicator light was flashing one light, so I just assumed it would need to charge for a bit before it would turn back on. After about two hours, when I went to bed, it still was flashing just one light. I kept it plugged in over night, and this morning when I checked it, the battery indicator lights showed that it was fully charged, but it still wouldn't turn on. I still kept it plugged in throughout the day just in case, but it still won't turn on even though all the lights are lit. Is the battery just showing me false information, or should I be worried about more than just the battery?
Info:
2008 MacBook pro
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Jun 26, 2009
Macbook pro 15"
I was trying to install windows on my pro, and i had bootcamp chop the hard disk in half, but then my disk drive didnt read the cd so i had to download and install some file. and after i restarted i could no longer access the windows side, it just disappeared.....plus i cannot reset my hard disk, cant erase it, and i cant reinstall OS X because there is no memory left..
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Jun 23, 2010
I have a MacBook Pro with the 9600gt in it. Since updating to 10.6.4 this morning 2 times while playing java games i've had the bottom half of my screen go black and most of the top half flicker. I've had to hold in the power button and reset both times. The second time I closed the screen and reopened it, the screen was black but no mouse and nothing moved.
Any advice? Would this be something to do with my graphics card or possibly some error in 10.6.4?Edit:: This is software related to 10.6.4 update and only happens when I open up a java game in a browser.
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May 28, 2012
So I was working on my MacBook Pro making a slide show and my other computer needed some power so I unplugged my Pro and plugged it into my other computer. After about five minutes my MacBook Pro just shut down. I don't know what happened, but the power is full and when I press the power button it doesn't do anything. It's almost like the power button doesn't even work.
Info:
MacBookPro
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Sep 10, 2014
As the headline says the right half of the screen turns black when watching video content in iTunes on full screen. I can see the whole picture when moving the mouse a little but as soon as the navigation bar disappears the right half of the picture disappears too. It does not matter what source it is. Both podcasts and movies work (or do not work) the same.
The problem doesn't occur for other player (VLC, XBMC etc.).
I have the latest OS (10.9.4) and iTunes (11.4). The computer is MBP 13-inch retina, late 2012 if it matters.
Info:
MacBook Pro (Retina, 13-inch, Late 2012), OS X Mavericks (10.9.4)
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Jun 22, 2009
I looked around and I find varying opinions. My laptop is mostly at home. Should I keep it plugged in when its full or should I let it drain? Please explain too.
Also, coconutBattery says I've used five cycles even though none of those were complete cycles. Is it just problems with the software or does it really count as a complete cycle?
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Feb 25, 2010
I just bought my macbook this past weekend. I've noticed a drop of over 100 mAH in my battery's full capacity, after two cycles. Is this normal? Does this drop slow down?
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May 23, 2010
I received my new 15", i7, 128gb ssd, 8gb ram macbook pro on april 19th. I love it and have no problems. Have any of you guys noticed that the full charge battery capacity, which is found under system profiler-power, varies often. When I first got the macbook pro the full charge capacity of the battery was around 6830. Now with each charge it seems to go down slowly. At first it jumped from 6800 to 6600 and now stays at around 6520. Is this normal?
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Mar 5, 2012
"To allow the adapter to recharge the battery to 100%, simply allow the charge to drop below 93%. The adapter will automatically recharge the battery to 100%."
Info:
MacBook Pro, Mac OS X (10.6.8)
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Apr 4, 2012
i use macbook air 1.1. when i charging, led is yellow but stuck in 99%. the indicator of magsafe cannot change the color into green.
Info:
MacBook Air, Mac OS X (10.6.8), macbook air 1.1
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Apr 4, 2012
Why does my macbook pro screen (2010) go black while I am using it with full battery?
Info:
MacBook Pro (15-inch Mid 2010)
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May 9, 2012
Macbook pro not starting up - Battery level is full.
Info:
MacBook Pro
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