MacBook Pro :: Shuts Itself Without Giving Warning When Battery Is At 5-15% Of Capacity

Jun 3, 2014

My 1-year old MacBook Pro Retina shuts itself without giving a warning when the battery is at 5-15% of capacity. Idk what to do about it.

MacBook Pro (Retina, 13-inch, Early 2013), OS X Mavericks (10.9.3)

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Software :: Laptop Shuts Down When The Battery Is At 35% With No Warning?

Dec 1, 2008

Laptop shuts down when the battery is at 35% with no warning! Any idea of what to do?

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PowerPC :: IBook Battery Charge Low - Shuts Down Without Warning

Oct 7, 2007

My school-computer (iBook 14" 1,42 Ghz G4, running OSX 10.4.10) has developed some unpleasant habbits lately. With lots of batterycharge left, 28-50%, it shuts down without warning. I try to restart it, and it gets to various stages of booting before shutting down again. It won't run untill i plug in the powercable, and then it starts of from almost half full charge. I did a bit of searching on the forums, and installed coconutbattery with the attached (depressing) result. Tried resetting the pmu, which didn't stop it from shutting down on me again 46 mins later. Does this mean I need to replace the battery?

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MacBook Pro :: Shuts Down Without Warning?

Dec 10, 2014

Ever since I updated to Yosimite - my MacBook Pro is shutting down many, many times a day w/o warning.  How can this be fixed?

MacBook Pro (13-inch Mid 2009), Mac OS X (10.1.x)

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MacBook Pro :: Battery Gets Empty In Sleep Mode / Battery Having Less Capacity?

Nov 14, 2009

I have a MacbookPro mid 2009 and have some problems with my battery. This morning I noticed that the battery was empty through it was supposed to be in sleep mode during the night. My battery has 97 cycles and has 99% of its original capacity. What could be the cause of this problem ?

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IMac :: No Warning - Just Shuts Off - Overheating?

Sep 14, 2009

I've been having trouble with my new iMac that i purchased recently (26th of August actually). Whenever I'm doing something CPU intensive, the machine just shuts off, but usually it's not right in the middle of whatever I'm doing, it's after I close the application. For example: I was playing SimCity4 the other day, pretty old game to cause this problem I would think. As soon as I exit the game, the system shuts off. No warning, nothing, just shuts off. This will happen when i close VMs (it actually happened yesterday while I was running the VM), etc. So I've reset the SMC/PMU, PRAM/NVRAM, and I've even reseated the RAM. Still the same problem. I've taken it in to a repair center in town, hoping I'll get it back by the end of the week. Does anyone have any idea why this would be happening?

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PowerPC :: G4 Ibook Shuts Down Without Warning

Dec 26, 2009

my daughter bought a used ibook g4 15" and it worked for several months before developing a maddening habit of shutting down without warning. I've read other threads about this with ibooks but they say it happens only when the battery is operating and doesn't happen when plugged in. My daughter's does it either way and will only stay on for ten or so minutes most times before shutting down. It makes the machine unusable. We've checked the power supply and the power input board. Is this a logic board issue? She paid $450 for the computer but the prices have come down and it might not be worth fixing. I can solder and can get into the logic board if someone can tell me what to do.

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PowerPC :: IBook G4 Suddenly Shuts Down With No Warning

Nov 5, 2007

I was hoping you could get me started in the right direction. My wife has an iBook G4 which lately, while using a full battery, just turns off suddenly. There is no warning and it never does it when it's plugged in. The battery looks like it's almost fully charged - at least that's what the meter in the menu says, so I don't know what's going on.

Could you possibly give me some steps to go through to try and figure this out?

The first step she wants to try is to get a new Intel MacBook, but I'd like to try a couple of other things first!

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MacBook :: Unable To Use System With Battery / Computer Shuts Down Hwen Start From Battery

Apr 18, 2008

My battery needed replacing for a couple of months before i dropped it from about knee level onto a sidewalk. After the drop I got the not charging icon. I thought maybe the battery had just finally died. so I did not panic about the no charge. The laptop works fine when plugged in to power with the old battery on or no battery at all. Not at all when unplugged.

When I put the brand new battery on the lap top, the computer shuts down halfway through boot up. I tried holding the power button down through boot up reset, as well as removing all power (plug and battery) and holding down the power button for 10 seconds reset.

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MacBook Pro :: Battery Is Just Giving 2 Hours Backup?

Apr 22, 2012

I have got a macbook pro with 2.2 ghz AMD 6750 graphics card. Its around 8 months old. The battery used to last around 4 hours but recently I get around only 2 hours. I have tried to change settings in energy saver to improve battery life but its still the same. I ve noticed that when it shows AMD graphics in about my mac, it takes more battery life. So, I guess its using more battery at that time. Ive read it switches automatically depending on the task but is there anyway to change it in settings? 

Also, how is it possible to get the best possible battery life? Should I keep charging and discharging it every now and then.? Currently I unplug the adapter as soon as it gets fully charged and the battery last for over 2 hours (surfing, listening to music, half an hour of video).

Pro, Mac OS X (10.7.2)

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MacBook Pro :: No Low Battery Warning?

Sep 2, 2014

I replaced the battery in my MBP which wouldn't charge or run for more than 1 hour.  Now, with the new battery, I have 2 issues:

1--battery status in menu bar does not change.  It shows it's at 28% all the time

2--I not longer get a warning that my battery is about to run out. 

This is a drag since the computer keeps going to sleep on me because it's run out of juice unbeknownst to me. 

MacBook Pro, OS X Mavericks (10.9.4)

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Mac Pro :: Unit With A Bigger Battery Capacity Allow Battery To Take Extra Load

Apr 13, 2009

I just got a Mac Pro Octo 2.93. It has a 4870 card and 4 1tb drives. I also have a Sonnet E4P e-SATA card installed. Would a 780 Watt 1200 VA surge suppressor be enough?

The other question is about waking the computer up. My old G5 Quad (7800 GT card, E4P card, 2 500gb drives and 8gb RAM) would wake up and while the afore mentioned surge suppressor would beep, the room electrical breaker wouldn't be tripped. Using that same suppressor for the Mac Pro results in the breaker being tripped when the computer wakes up. Would getting a bigger suppressor help with this? In other words, does a unit with a bigger battery capacity allow the battery to take the extra load when the computer wakes up preventing the breaker from tripping?

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MacBook Pro :: Sudden Shutdown Without Low Battery Warning

Nov 13, 2008

I bought a MacBook Pro September 2007, the last months I have experienced a sudden shutdown of it without any low battery warning. After browsing around the forums I found a app called Coconut Battery which I installed. This is what it showed me: What I can do to get my battery performance better? Do I have to invest in a new battery? And aren't the prices on those extreme?

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MacBook Pro :: Battery Capacity 87% After 51 Cycles

Sep 3, 2010

My AppleCare expires on Monday September 6th, and I am wondering if my 87% capacity at 51 battery cycles suggests I should visit an Apple Store this weekend? The closest store is around 25 miles away, so if I would be wasting my time, I would rather not take the trip. My concern is mostly based on my warranty ending. This is a 2009 13" MBP.

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MacBook Pro :: Can Battery Capacity Increase From What It Was?

Sep 22, 2010

I used an app on my MBP called Coconut battery. it said that my current battery capacity was 94% of what it was since I bought it. I assumed that means those 6% are never coming back and I should start using it more responsibly to make it last longer. I read a lot of forums on how to use your notebook effectively, when to plug it in, how much I should let it discharge etc. After 2 weeks of my new habits, I checked my battery life again and now it says 96%. Is it even possible for it to go back up?

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MacBook Pro :: Current Battery Capacity 96%

Oct 20, 2010

I have MacBook Pro about 17 months old (bought new Summer 2008). According to Coconut Battery, my current battery capacity is 96% after 185 cycles (see below). This was taken just after I re-calibrated the battery last night. I usually work the laptop from the battery ... I rarely leave the laptop plugged in unless charging, and when fully charged I always unplug and run the battery down before plugging in again. So, is 96% battery capacity good or bad for a 17 month old MacBook with 185 charge cycles? Is the way I'm charging ok, or is it better to have the MacBook plugged in continuously and have less charge cycles (would this give me a better battery health %)?

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MacBook Pro :: 101 Percent Battery Capacity?

Nov 16, 2010

So I just opened Coconut battery, and it is saying that I have 101% battery capacity. How is that even possible? In the other hand, iStat says 100%.

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MacBook Air :: What Does Battery Capacity Show

Feb 9, 2008

Charge remaining (mAh): 4292
Fully charged: No
Charging: No
Full charge capacity (mAh): 4919
Oddly enough, I can't even reach 4 hours. 50% screen with web surfing/msword.
SDD version.

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MacBook :: Battery With More Capacity After 8 Months Use?

Apr 4, 2009

Got a question about the battery in my wife's white Macbook. I just downloaded (and ran for the first time) Coconut Battery and it reports the following info:

Current Battery Charge: 5281 mAh
Maximum Battery Charge: 5281 mAh

Current Battery Capacity: 5281 mAh
Original Battery Capactiy: 5020 mAh

Battery-LoadCycles: 60
Age of your Mac: 8 months

Now, I'm no rocket scientist, and I'm definitely not complaining, but how in the world does my battery have More capacity now than it did when it was new? Is this an error in Coconut? System Profiler reports the same capacity and my research online seems to concur that 5020 mAh was the original capacity.

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MacBook :: Battery Capacity Only 3 Hours

May 4, 2009

I've got a 4 month old Macbook Aluminum 2.4 ghz. I was getting great battery life for the first couple of months. But I'm now getting 3:10 with screen half light, and wifi on, bt off, doing a bit of downloading, etc. I've recalibrated the battery a number of times. According to activity monitor my cpu is hovering under 10% when I'm doing my battery test. This is at least 2 hours less than I was originally getting. Coconut Battery tells me that the original capacity was 4100, but its currently at 4052. Battery load-cycles are at 97 and it says the Mac is 5 months old. Should I take it in to the Apple store under AppleCare?

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MacBook Pro :: Battery Capacity When Always Plugged In

Feb 28, 2010

I bought my MacBook Pro 13.3" 5 months ago (according to Coconut Battery) and the battery-loadcycle is already at 51 and 89% battery capacity. Anyway I wanted to know, if I keep my Mac plugged in on the charger will the battery-loadcycles decrease?

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MacBook Pro :: 87% Battery Capacity After 56 Cycles?

Mar 1, 2010

I get ready for the next disappointment tomorrow (maybe no MBP update) and looking out for a MBP at eBay. I've found a good one (August 2009) 2.53 GHz, 4 GB RAM, 500GB HDD etc. for round about 900� (1.200$) (in Germany we pay 1533� for this model so round about 2088$). The guy sent me a screenshot of the battery capacity which is 87% (4762mAh) after 56 loadcycles. Is that acceptable? IMO it's a bit too low - what do you think? Maybe I'm going to buy a AppleCare Protection Plan afterwards ... would the battery be covered?

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MacBook Pro :: Why Battery Capacity Too Low (33 Percent)

May 7, 2010

I've had my Macbook Pro for just over 2 years and recently bought one of the 2010 models. I'm about to sell my old one but when I downloaded Coconut Battery, I saw that my battery holds a lot less charge than it did when it was new: Have I been doing something wrong or is it just low because the laptop is 2 years old? If it's something I've been doing, I don't want to make the same mistake with my new one.

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MacBook Pro :: Original Battery Capacity - Way Off

May 29, 2010

Is there any way to reset the original battery capacity? This is a new MacBook pro. I am using coconutBattery and it says my original capacity is only 1300mAh. My current capacity is 12718mAh.

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MacBook Pro :: What Is The Standard Battery Capacity In MAh

Feb 21, 2012

After looking into the technical side of my MBP, i saw that my full charge capacity was 6567 mAh. 

I looked into this because it seemed as if my MBP's battery wasn't lasting as long as I thought it once was. I have a 15" 2.2 gHz MPB    

MacBook Pro, Mac OS X (10.6.8)

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MacBook Pro :: Get Warm And Has Low Battery Capacity?

Mar 5, 2012

Apple say MacBook Pro early 2011 should have 7+ hour capacity. Mine dries out in less than 2 hour. Beside: The computer gets very warm, cannot contact to a table without damage the table.

MacBook Pro (15-inch Early 2011), Mac OS X (10.7.3)

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MacBook Air :: Determine Battery Capacity For It?

Apr 24, 2012

How may I determine the battery capacity of my MacBook Air?I'm interested in the battery health status in order to stretch the life time?

MacBook Air, Mac OS X (10.7.3)

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MacBook Pro :: Battery Is Losing Capacity

May 24, 2012

I just logged on to my macbook and it said 96% fully charged. I got really worried and installed coconutbattery and it says my maximum capacity is 98%! I've only had my mac for 4 days!


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MacBook :: Left Fan Giving High-pitched Whine / Noise Coming When Computer Is Running Off Battery

Dec 26, 2010

This is my first post, and I apologize as it's a little long. I just wanted to get the whole story on the table and clarified.I've had one of the new Aluminum 13" MacBooks (2.0GHz C2D) since Christmas Eve. A few weeks ago, it accidentally fell off my desk at work (not a far drop , but far enough for my heart to stop for a few minutes) when I got tripped up in the power cord under the desk.

For all intents and purposes, the MacBok seemed to work fine. I had one of our IT staff, who happened to be a trained Apple repair tech, take a look at it; the only real damage was that the display hinge had been knocked a little out of alignment. Just ot be on the safe side, I took the machine to the Apple Store, where they told me not to worry about attempting to get the hinge fixed (because I'd be paying a lot of money for such minor work), and the Genius sold me a hardcover plastic Speck case for the MacBook.

While the Speck case certainly looked nice and madethe already sturdy laptop feel sturdier and "protected", I was a little concerned about the amount of heat the machine was giving off within the case. On Sunday, I unplugged the machine from the MagSafe charger for a few hours and left it closed in sleep mode. When I woke it back up, the fan on the left continually gave off some sort of high-pitched whine whenever the computer was in idle mode.

I Googled, searching this site and others, and read about the "CPU whine" in the previous generation MacBooks and MacBook Pros. I also saw where a few people with new Aluminum MacBooks were having this same issue or something similar:


It seems to only make the noise when the computer is running off of the battery - plugging in the MagSafe charger makes the noise quiet 85% of the time (I've found that plugging, unplugging, and replugging will not stop the whine from occurring).

I tried installing QuietMBP as was recommended in some posts, but the only setting that will stop the computer from whining is the "highest" setting (that is, allowing the processor 0 seconds of idle time), which causes QuietMBP to eat up 30% of my processor usage in Activity Monitor and to start the fans going (and, presumably, to significantly lower my battery life).

I don't know whether all of this was the result of the MacBook falling, from it overheating in the case, or something that "just happened". I set up an appointment with the Genius bar for today at 4 PM, but Idiscovered another odd occurance when I set up a new account for the Apple Store (rather than give them my password)

The noise never happened under the new account. Never. I left the machine idle until any and all initial processes were done. No noise. I checked Activity Monitor for stray processes. None. And no noise.

Now I'm bewildered. Could something have gone wrong somewhere in my account, leading to a corruption of a power management utility or process? I'm not canceling my appointment, but I am going to try a few things before I leave. I've already repaired disk permissions, and I'm about ot reinstall the 10.5.6 OS X combo update. Should I try to reset the PRAM too? What other options should I be looking at?

Or should I just wait, and let the Genius Bar folks look into it? As a note, I'm aware I may have to pay for any repairs because they may or may not blame them on the MacBook having dropped (despite two to three weeks passing between the fall and this issue arising), and I'm okay with paying for reapirs (though I will try my best to argue my case, of course).

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MacBook Air :: Battery Capacity - Unfavorable Results

Nov 16, 2008

Please post your battery capacity on your Gen 2 Air. Just received mine on Thursday. I have the following unfavorable results.
Capacity: 4789 mAh
94% Life
Original Capacity 5090 mAh
Battery loadcycles 11
Age of my Mac 2 Weeks....
Am I correct in assuming that my capacity should be around 5200 mAh and that this is indeed a defective battery? Please share with me if I am incorrect, as web browsing after a full recycle is about 2.25 hours, without doing anything else.

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