Ibook shuts down on battery power

Same problem as others when on battery power. ibook shuts down after 10 to 30% on battery
Battery info:
Battery Information:
Charge Information:
Charge remaining (mAh):    2000
Charging:    No
Full charge capacity (mAh):    2010
Health Information:
Cycle count:    0
Condition:    Good
Battery Installed:    Yes
Amperage (mA):    0
Voltage (mV):    16584
This is while on AC power. Can anyone help?

It runs on battery power but shuts down between 10% and 50% of usage. I had to replace my adapter after accidently kicking it while it was plugged into computer. Since I bought a new adapter the battery indicator shows that it is charging until full charge. The battery is bout two years old. May have damaged the dc board when I tripped over the original power cord.
More accurate battery info:
Battery Information:
Charge Information:
Charge remaining (mAh):    932
Charging:    Yes
Full charge capacity (mAh):    2010
Health Information:
Cycle count:    216
Condition:    Good
Battery Installed:    Yes
Amperage (mA):    1198
Voltage (mV):    16306
The previous battery info was while on AC power and the indicated a full charge

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Premature shut down on battery power . . .

So I have seen this issue posted in other topics but nowhere have I seen an answer so I thought I would start a new thread. Actually I have two issues.
To start, I am using a 14" ibook G4 (the most recent version with the 1.42 GHz chip), 1.5gb RAM, 60GB HD. The ibook was purchased new in early September. It is still under warranty, but not phone support.
Issue 1. When I use my ibook on battery power often (but not always) it shuts down when I have about 20% power left in the battery. There is enough power to restart and work for several more minutes (sometime as much as half an hour). When it shuts down like this there is no low battery warning it just shuts off. And in fact it freezes. That is to say the screen is dark, the little white light that snores when the ibook is asleep in not on. However the only way I can restart is to hit control-apple-power, rather then just the power button alone. Usually when I restart my ibook it then runs fine till I get the low battery warning.
I have tried resetting the PRAM and I have re-calibrated my battery, neither of these things seems to have helped. I have lost some work with this so I really want to figure it out. Any ideas on how to make this stop?
Issue 2. As stated previously this is a relatively new ibook (4 months old). My battery only gives about 4 hours of work time max. I installed CoconutBattery in December and I had only 89% capacity (after 64 charge-cycles). This capacity has not changed since I first installed CB (now at 71 cycles). How low a capacity does a battery have to have to be eligible for replacement under the apple warranty. It seems a new battery should have over 90% capacity.
I really was hoping to be able to get closer to 5 hours of work time out of the battery. One of the reasons that I went with the ibook instead of the powerbook was for the longer battery life.
ibook g4 Mac OS X (10.4.3) PowerMac Mirror Door dual 1ghz

1. Resetting the PMU should take care of it.
2. Here are a few tips to maximize battery life.
A. Lower the brightness to about 5 or 6 bars.
B. Turn Airport off if you don't need it.
C. If there's a disc in the optical drive, remove it.
D. Set the processor performance to Reduced or Automatic in Energy Saver preferences.
89% and 4 hours run time after 71 cycles seems to be pretty good to me. All manufacturers take the steps I noted above to test battery longevity. If you expect to get the same results you have to setup the computer the same.
John

Mac Book Pro Shuts down on Battery Power

First, I apologize to everyone for asking this question yet again. I have gone through the previous posts and I am still at a loss. So thank you for your patience and help.
When I run my MacBook pro on battery power it will run for around 15 - 20 minutes... then just be dead. No low battery warning. No shut down. Just poof and gone.
I have looked at my power settings to see if my battery is bad. But I don't have a Status indicator in there. I see This:
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 0
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 0
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 1185
Remaining Capacity (mAh): 1185
Amperage (mA): 0
Voltage (mV): 12426
Cycle Count: 174
AC Charger Information:
Connected: Yes
Charging: No
Hardware Configuration:
UPS Installed: No
I have also looked at the directions on http://support.apple.com/kb/ht1490 about how to calibrate my battery. It says:
" 1. Plug in the power adapter and fully charge your PowerBook's battery until the light ring or LED on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged.
2. Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in.
3. Disconnect the power adapter while the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, the low battery warning dialog appears on the screen.
4. At this point, save your work. Continue to use your computer; when the battery gets very low, the computer will automatically go to sleep.
5. Turn off the computer or allow it to sleep for five hours or more.
6. Connect the power adapter and leave it connected until the battery is fully charged again."
Only I have a problem withe step 3 and 4. I don't get the warning, and it doesn't go to sleep. So, I don't think any calibration is working.
Do I need a new battery? Should I just buy one? This computer is WAY out of warranty and I never purchased and apple care plan for it.
Again, than you for any and all advice on what I may need to do.

I think it's time to buy a new battery

MacBook shuts down on battery power at high cpu usage

I have a black MacBook core 2 duo (MacBook 2,1) that has always worked perfectly, but about 2 weeks ago it started to shut down without any notification.
When I am doing CPU intensive tasks I can hear a click and immediately after the computer turns off. This happens with different applications and even running Windows trough Boot Camp.
My first thought was that the computer shuts down itself to prevent overheating but since I only get the problem when running on battery power I rejected that theory.
In the other side my battery is working well, because it has only 183 charge cycles and the full capacity is 4169 mAh, meaning 82% of the capacity of a new one. With airport and bluetooth turned off and low brightness on the screen I can still read PDFs for more than 5 hours.
Another suspicious behavior is that last week, several minutes before the computer shut down, it couldn’t make any sound. I rebooted it and sound started working again. Maybe this is an independent problem but since they started together it can be related to the high CPU shut down one.
Has anybody seen this kind of behavior? Any idea about what is producing the problem?
Thanks in advance

yes it is the 5.1
Battery Information:
Model Information:
Serial Number:          DP-bq20z951-3981-3c62
Manufacturer:          DP
Device name:          bq20z951
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          002a
Hardware Revision:          0005
Cell Revision:          0100
Charge Information:
Charge remaining (mAh):          1761
Fully charged:          No
Charging:          Yes
Full charge capacity (mAh):          2110
Health Information:
Cycle count:          135
Condition:          Check Battery
Battery Installed:          Yes
Amperage (mA):          -578
Voltage (mV):          12033

Macbook shuts down on battery power

My macbook shows 99% battery but if I disconnect the power cable it shuts down after a few minutes and I can't get it to boot without the power cable attached. Is it the battery? This is a late 2008 macbook with the original battery.

yes it is the 5.1
Battery Information:
Model Information:
Serial Number:          DP-bq20z951-3981-3c62
Manufacturer:          DP
Device name:          bq20z951
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          002a
Hardware Revision:          0005
Cell Revision:          0100
Charge Information:
Charge remaining (mAh):          1761
Fully charged:          No
Charging:          Yes
Full charge capacity (mAh):          2110
Health Information:
Cycle count:          135
Condition:          Check Battery
Battery Installed:          Yes
Amperage (mA):          -578
Voltage (mV):          12033

IBook shuts down after unplugging power adaper

Hello there...
My iBook G4 doesn't last for more than 10 minutes after I unplug the power adapter. I've checked some other posts and it looks like you need the information below before going any further. Any help on what I should do to remedy this problem?
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 1209
Remaining Capacity (mAh): 1207
Amperage (mA): 0
Voltage (mV): 16593
Cycle Count: 250
Thanks,
Hagen

Hey Hagen,
I've got a brand new iBook 12" battery here in front of me. Just got it in the battery exchange program.
It was fully charged and I've been running it on battery for a bout 15 minutes.
Battery info:
Charge Remaining (mAh) 4136
Full charge capacity (mAh) 4400
Cycle count: 1
Condition: good
Amperage (mA): -1007
Voltage (mV): 11956
So that info that you gave us is w/ the iBook plugged in? The above was with it running on battery.
When this one is plugged in info changes to:
Amperage (mA): 1748
Voltage (mV): 12378
So you're battery seems really weak. The cycle count is pretty high and the capacity seems to be about 1/4 of new.
But run it on battery and give us that info again.
Li-Ion battery have an expected lifetime of 3-4 years whether you use them or not. Which surprised me.
Richard

Adjusting automatic shut-down on battery?

Before installing Mountain Lion this summer, I used to have a slider or some way of controlling when my Macbook (13-inch, Aluminum, Late 2008) shut down on battery power. I was able to set it for 10% battery life or whatever, and go through a full discharge cycle. There were also warning pop-up alerts, letting me know when I was in critical time zone with battery life, and I think there was even a message like "you have 15 minutes of battery power left."
Now with ML and the last two updates, my battery reaches about 30% battery life and poof! everything goes black. No warning. No pop-up alert. Just a black screen.
I've searched Apple, the support forums and the web for a fix and the closest thing I find is info about UPS and uninterrupted power. I'm sure there is an easy way to adjust this in system preferences but I can't seem to find it. This is what my energy saving options are:
It's bad enough ML has reduced my battery power in half (I'm down to about 2.5 - 3 hours when I used to often get more than 4.5 - 5 hours), but this automatic everything-goes-black shutdown when I have 30% battery life is making me want to throw my laptop out the window. (And don't even get me started on the Spotlight indexing problems I'm having again with the 10.8.2 update... I've tried multiple things with that and am delaying the pain of having to reinstall ML for the third time since it came out this summer). FWIW, I have 290 battery cycles, but until ML I didn't have any sort of battery life issues.
Can you point me some direction? Thank you!

I'm having the opposite problem...
I leave it playing music in my speaker dock, and it shuts off on its own after about 1/2 hour even though I'm still listening.
I have not been able to find any controls for controlling or disabling the auto-sleep.
Please let me know if you find anything related to this

IBook shuts down without warning with 3rd party battery.

Can you iBook G4 folks with battery savvy please check out my iBook G3 question:
http://discussions.apple.com/thread.jspa?threadID=1743983&tstart=0
To summarize, my brand new 3rd party battery causes the battery icon to go red after 3.5 hours run time with 1 hour left (23%). The iBook shuts down with 13 minutes left (4%) but doesn't get to 10 minutes so no warning message.
The distributor said some G4 iBook owners also reported the same strange behaviour.
Does anyone have any ideas or has anyone else experienced this? Yes I reset the PMU - no difference.
Mrs H

All the literature from Nu Power says I should get the warning - it's just that the battery shuts down before it gets to 10 minutes left when the warning SHOULD (they say) appear. Another conversation with the techies confirms that the message should appear.
I have recalibrated it thrice, each time it runs a little closer to the 10 minute mark for time left. I'll keep trying.
Trouble is we are leaving for a trip very shortly and don't have time to return this 2nd Nu Power and try for another brand.
I get about 5 hours of run time when trying to discharge the battery fully as quickly as possible by having screen at its brightest, while running iTunes with visualizer on and receiving a radio broadcast.
How much time do you get on your new Apple battery? (on a G4?) We are going places where we will be without electricity for a day or so and the long charge and run time are our prime necessities.
Thanks for your reply,
Mrs H

IBook Shuts Down at Gray Apple

I have a 12" iBook 700, 384mb RAM, panther. Everything fine on it, except the DC in jack is non-functional. I've been charging the battery externally and that's worked great until yesterday.
So, here's what happens:
• I hit POWER
• iBook powers up, I hear all the drives etc
• I see the gray apple for Approximately 5 seconds
• The iBook shuts down.
It actually reminds me of trying to boot with a dead battery (which mine is not)
Here's what I've tried:
Reset PRAM
Reset PMU (many many times, varying lengths)
Booting from OSX CD (OS 9, 10.2, 10.3)
Booting from FW hard drive
Pulled extra ram.
Swapped in alternate ram
All of these result in the shut down after 5 seconds.
If I boot with OPTION held I can see the available drives and let it sit like that till the cows come home. No shut down.
If I boot into Target Disk mode, it mounts and acts perfectly on the other mac.
BUT, if I boot with an OS 9 CD it gets all the way past the OS 9 screen before shut down, like 20-45 seconds.
And if I boot with an NON Mac OS (Ubuntu, or YD linux) it works just fine, no shut down. So I don't think it's the Logic Board, right?
I'm confused. Could this still be tied to the DC board? Maybe it's getting a signal that it has no battery power somehow? I tried disconnecting the board from the Logic board completely, but problem persists. Could just having the board missing cause this? I ordered a replacement for a minimal amount, just in case.
What else could it be? Could the MB ram have gone bad or something?
It doesn't seem to fit the motherboard video problem that used to be so popular. Any ideas?

I only just came across this thread, so I'm too late to the party to be of any help, I think.
But I've noted - on a variety of Macs from G3 PowerBooks onwards - that if a battery is too deeply discharged it may tell the system (..but I don't know which bit of the system; obviously a bit of system software..) that it cannot be charged. At that point the system closes down.
The DC input may also be notified that the battery is "unchargeable", and therefore some software control appears to fail to charge it.
It often happens - or has happened to me - that if the problem battery is put in a different Mac it may accept a bit of charge, at which point the "won't work" signal is revoked, and it will work OK in its usual device.
I've sometimes applied a charge directly to a recalcitrant battery from a desktop variable low voltage power supply (..you know: those boxes with knobs and an ammeter and voltmeter on the front..)
..and that's "kickstarted" the battery enough for it then to behave properly again.
Er, sorry not to have replied sooner..

IBook sometimes boots on battery power

I recently inherited an 800MHz iBook G3 that has been acting strangely. Its internal hard drive was shot (it made loud clicking noises) but I got it to boot off an external firewire HD. The machine works great when plugged in to AC power, but acts very strangely when on battery power. It wouldn't boot on battery power, but if the iBook was running I could unplug the adapter and sometimes the iBook would run for a while and then shut off and other times it would immediately shut off (the battery was 100% charged).
I replaced the internal HD, hoping somehow it would solve my problem, but it didn't. I have done some more experimenting and it seems if I have had the iBook plugged in to AC power for a while (like overnight), the ibook will boot on battery power and run anywhere from 10 seconds to a minute before powering completely down. After that, the machine is completely dead and I have to plug it in to AC power to get it to boot again. Also, when it reboots, the time is messed up. I get an error message that says "Your computer's clock is set to a date before March 24th 2001. This may cause some applications to behave erratically. Please use the ..."
I have reset the PRAM and PMU repeatedly, I have tried other batteries (and while none of them were new they worked in other ibooks) with the same result. I also tried my battery in another ibook and it booted and ran that ibook just fine. Something in my ibook just shuts it down. I get some sort of system halt call in the log file.
I'm at a loss... anybody have any ideas as to what could be wrong or what I can do to fix it? Thanks for the help.

Hey JW.
Well like SU says:
"It sounds like there is a bad connection between the battery and the computer. "
So what I have seen on these is a bent locking tab on the battery lock. I had a few in here like that. I could lift the iBook 1" when it was running on battery and if I dropped that small bit it would shut down. Bending the locking tab back solved the problem. Careful it's fragile.
Also like Rhonda says it could be a logic board problem.
I've seen the super capacitors on the G3s go bad. Typically it's a .22 Farads @ 5.5 VDC. What happens is that the cap blows up (probably due to over filling like in the classic cases of cap failure in the past). It's easy to see since the outer case gets peeled back.
If you're date and time is constantly messed up I'd suspect that. I've replaced those caps with ones I bought from Electronics Goldmine.
Since that cap holds settings on the PMU it would also affect power if there were small transients that could cause you problems. The super cap system is designed to hold settings for around 30 seconds while you change batteries but if that cap is dead it wouldn't hold settings for a millisecond.
Richard

My macbook pro (late 2008) shuts down but battery is at 25-30%

My macbook pro (late 2008) shuts down but battery is at 25-30% and I don't get a low power warning box before this happens. This only happens when the power chord is not connected, and it restarts with no problems once I put the power chord in. Does this mean I need a new battery, or is it an indication of something else? Using osx 10.5.8

Mine is Unibody 15" MBP late 2008, with the exact problem as yours. It can be a sudden shut down at 25-32%, or, after upgrading to OS 10.7.2, can be hang all of sudden on battery power.
Condition on, "Replace Soon". From 4.5 - 6 hours when new, goes down to 1 - 2 hours on discrete graphics.
But after 'abusing' it for the first year in the heat of Jakarta's climate in a non AC room when doing a video editing, before moving back to a comfort AC room at home sweet home, the battery performance is still top notch comparing to other kind than Apple. Also, it caused me to replace the right fan, after a lot of hard work on that first year. Oh, and by the way, I regularly done the battery calibration, at least once or twice between 3-6 months.
Here's also an useful link about battery I found on the internet:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s
My battery condition:
Battery Information:
Model Information:
Serial Number:          6N8389BD13EB
Manufacturer:          SMP
Device Name:          bq20z951
Pack Lot Code:          0
PCB Lot Code:          0
Firmware Version:          002a
Hardware Revision:          000a
Cell Revision:          100
Charge Information:
Charge Remaining (mAh):          2192
Fully Charged:          No
Charging:          Yes
Full Charge Capacity (mAh):          2716
Health Information:
Cycle Count:          616
Condition:          Replace Soon
Battery Installed:          Yes
Amperage (mA):          254
Voltage (mV):          12392
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          0
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          15
Automatic Restart on Power Loss:          No
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          No
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
PrioritizeNetworkReachabilityOverSleep:          0
RestartAfterKernelPanic:          157680000
Battery Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          5
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
Reduce Brightness:          Yes
RestartAfterKernelPanic:          157680000
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          Yes
ID:          0x0100
Wattage (W):          85
Revision:          0x0000
Family:          0x00ba
Serial Number:          0x0063ac36
Charging:          Yes
Got the battery replacement today. Hopefully it will last for at least 3 years like it predecessor.

Iphone 4s shuts down, although battery is loaded. WLAN/Bluetooth are not available

Iphone 4s shuts down, although battery is loaded. Beside that WLAN/Bluetooth are not available (can not activate the push-button )
IOS-Diagnostic shows: Problem with power supply/battery..
restore/reset already done. No difference
I have a contract with t-mobile. Iphone 4s is 1,5 years old. Is it a case of warranty? Contact with t-mobile or apple?
Need further information?
Thank you very much in advance!

After I removed Facebook and FB messenger, my iphone problems vanished. No spontaneous shutdowns anymore.
My girl-friend first removed FB messenger with no succes. After removing Facebook, she also is free of problems.

Why does my iphone 3gs shut down when battery gets to 80%? have installed new battery and nothing changes?

Why does my iphone 3gs shut down when battery shows 80%. a couple of months ago is shut down at 60% but has continually gotten worse. this was before 5.0. i took it to a repair man and he tried a used battery, a new battery, and the original battery. nothing helped. 5.01 didnt help either. What is my problem?

Fully discharge the battery (till it shuts down and won't turn on) and then fully recharge it (100%). This will recalibrate the battery meter. You may need to do this a few times.

Iphone4s shut down at battery level 30% when using 3G

hi,
i am gan from malaysia, iphon4s 6.0.1 user, phone age 1.5 years old
Recently have 1 unique problem to ask for buddy helps in here. thank you 1st for all.
my iphone4s shut down at battery level 30% when i use 3G service only, turn on 3G service to use around 5 hours to shut down my phone, from 100% - 30%.
but, it doesnt happen when i turn on my WIFI, or use normally.
hard reset - done..
soft reset - done.
itunes restore - done.
battery calibration - done.
battery - it seems not a battery problem because when i use WIFI, or normal use without data, i can use until 1% until phone shut down itself.
upgrade ios 7.0.4 - the battery could drain more faster if i upgrade to this firmware.
i have no idea, even i go for apple store, their technical helps are same with my level, except they ask me to change a new iphone, wow..
anybody in here could help or experience this?

anyone can help me to solve this problem?

IMac making loud beeps and freezes. Only way to shut down is hold power button. Any ideas what might be wrong?

iMac making loud beeps and freezes. Only way to shut down is hold power button. Any ideas what might be wrong?

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Could be the RAM (memory)
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Ibook shuts down on battery power

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