Sudden power down when on battery

Hi,
I have a 2009 17" Macbook Pro that developed the habbit of powering down without warning when disconnecting the power supply.
I have replaced the battery, but that did not help. Strange thing though, it will happily run for hours when I bbot into the recovery mode, it only happens when I boot Maverics.

The design capacity of a new battery is often exceeded slightly by its actual capacity. You got a good one.
My late-2008 MBP's battery has a design capacity of 4600 mAh, but it started off at about 4800 and still has never gone as low as 4600, after 11 months and 64 cycles. Right now it shows 4622.
It isn't possible for your MBP to have operated on battery power for 24 hours without sleeping. Something is wrong, not with your battery but with your story.

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My BB Curve 8520 will power down when it has 3 out of 5 "bars" of battery power left.

My BB Curve 8520 will power down when it has 3 out of 5 "bars" of battery power left. I have replaced the battery twice. It is out of warranty. The software update did not help the problem. Do I just need a new phone?

Hello debra85,
I can imagine the frustration the battery life is causing! To confirm are you using the Blackberry Curve 8530? Have you attempted restoring the operating system through the Blackberry Desktop Manager? This will help clear corruptions that may be present on the phone. We can also discuss what options you have to get a new phone, if needed. I look forward to hearing from you and finding a solution to your concerns.
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Sudden power down

Hi everyone, I've got a 13" MacBook (white) and since last night, it started suddenly powering down on its on, while I was on AC power (with the battery in). Prior to that, I was having problems with the fan suddenly going into overdrive although there was no increase in activities on the MacBook. After googling the problem, I reset the SMC and all seemed well for a while, and in fact, performance seemed smoother. Then the problem of the sudden power down started again. I tried resetting the SMC again and took out the battery after noticing a bulge at the side of the battery. It's probably the third time that I've reset the SMC, but it seems like the problem still persists. Does anyone have any suggestions on how to troubleshoot the problem?
Cheers!

It could be an overheating issue (which may also be causing your battery to swell).
When you notice the fans going, open Applications/ Utilities/ Activity Monitor. Change the pull-down menu from "My Processes" to "All Processes" and sort by the CPU column. Is there a process running very high, say, over 25% of your CPU?
You can also download iStat and use it to monitor your temps and the fan speed:
http://www.apple.com/downloads/dashboard/status/istatpro.html

My MacBook pro shuts down when the battery drops down to 85% charge

I have a 15inch MacBook Pro Model 1.1. When i run it on battery it always shuts down when the battery gets down to 85%. Does anyone know how to take care of this problem so that i can use the battery for longer?
thanks!
r

Thanks, you're a life saver. Here is the report:
AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
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): 10
Disk Sleep Timer (Minutes): 180
Display Sleep Timer (Minutes): 2
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): 3004
Remaining Capacity (mAh): 2994
Amperage (mA): 0
Voltage (mV): 12385
Cycle Count: 41
AC Charger Information:
Connected: Yes
Charging: No
Hardware Configuration:
UPS Installed: No

My iPhone automatically shuts down when the battery reaches 50%. How can I resolve it?

My iPhone 4 iOS 7.0 automatically shuts down when the battery charge reaches 50%. Is it a battery problem or is it the phone?

Thanks, you're a life saver. Here is the report:
AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
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): 10
Disk Sleep Timer (Minutes): 180
Display Sleep Timer (Minutes): 2
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): 3004
Remaining Capacity (mAh): 2994
Amperage (mA): 0
Voltage (mV): 12385
Cycle Count: 41
AC Charger Information:
Connected: Yes
Charging: No
Hardware Configuration:
UPS Installed: No

My MAC Pro shuts down when the battery still have 50 minutes life.

My MAC Pro shuts down when the battery still has 52 minutes life without any warning. Does anyone have this problem? BTW, it is less than one year old.

You must have a MacBookPro, right? MacPro's are big desktop models.
Try the MacBookPro battery forum or their Usage forum.
DALE

Toshiba Satellite P10-833. Sudden power down

Notebook - Toshiba Satellite P10-833 PSP16Exxx.
Problem - Sudden power down.
The solving of this problem are described by Toshiba.
I've downloaded and installed BIOS 1.50 on my notebook.
But the problem remains.
Help me, please.
Dmitry.
Message was edited by: dvedeneev

Hi BC,
A series of beeps (usually in a pattern of long and short) usually indicate a problem with the main-board in your notebook. Unfortunately, there is no published documentation about the beep pattern to assist with interpretation so the usual advice is to refer the notebook to an authorised service agent who can run diagnostic tests against the notebook.
The normal boot sequence is to run a POST to check the viability of the system basic components followed by the BIOS load and then finally the operating system. The symptoms you are experiencing indicate a problem in the POST, but without suitable diagnostic equipment it would be difficult to pinpoint exactly.
regards,

When I use my 5 year old MBP on battery it suddenly shuts off when the battery life reaches 88%. Anyone know why and how to fix it?

when I use my 5 year old MBP on battery it suddenly shuts off when the battery life reaches 88%. Anyone know why and how to fix it?

Model Information:
Manufacturer:          Sony
Device Name:          ASMB012
Pack Lot Code:          1
PCB Lot Code:          0
Firmware Version:          110
Hardware Revision:          500
Cell Revision:          303
Charge Information:
Charge Remaining (mAh):          4108
Fully Charged:          Yes
Charging:          No
Full Charge Capacity (mAh):          4200
Health Information:
Cycle Count:          40
Condition:          Service Battery
Battery Installed:          Yes
Amperage (mA):          0
Voltage (mV):          12361

Sudden Power Downs | Sudden Power Offs

We have just moved from one office to another office in the same small unit (rewired by professional A grade electricians).
We now have the following Mac Pro's suddenly switching off:
1/ Mac Pro QUAD 4 Core (3 months old, worked fine in old office) 10.5.2
2/ Mac Pro QUAD 8 Core (1 week old, worked fine in old office) 10.5.4
3/ Mac Pro DUAL 4 Core (1 year old, worked fine in old office) 10.5.3
Does anyone have ideas as to why this is?
Is it a system, OS X 10,.5.x issue?
Is it a hardware issue?
All (but the 8 core as it's too new to consider) have been fine till the move.
Or is it the electric's and the power draw on the system?
Mind you, shouldn't all the Macs go and not just these ones (together or separately)?
We have 12 other Mac's (Pro/G5/iMac/Mini, 10.4.11, + perriferals) on the power ring too.
I have read about MacBook Pro power issues but cannot find anything about Mac Pro's on the Discussions...
I think it's the wiring / electrics...am I correct?
Thanks,
Message was edited by: James Rothschild

I have a Mac Pro 8 Core and I've also had trouble with 3 seemingly random power downs. I noticed that an external HD on the same outlet was off (it does not turn back on when power is restored like my other HDs), which lead me to believe it was an electrical problem. The power never went completely off as far as I can tell, as the clocks still read correct time.
Until I can figure out and fix what is actually causing the shutdowns, I decided to buy a cheap battery backup which could help keep my computer up if I am just overloading the electrical system.
I bought the APC Back-UPS ES 350 Battery Backup/Surge Protector at circuit city for $30
http://www.circuitcity.com/ssm/APC-Back-UPS-ES-350-Battery-Backup-Surge-Protecto r-BE350G/sem/rpsm/oid/217087/catOid/-13021/rpem/ccd/productDetail.do?linkid=j134 59594k1971&affiliateid=k1971&mid=sduidp0t878330
Granted with as many computers as you are running, my quick fix is not as fitting a solution.

My iphone suddenly shut down when i turn on cellular mode

My iphone 4 using ios 7.0.6 . Everytime i turn on the cellular mode, it suddenly shut down. I turn it on and it will be on for few second then the apple logo appears again and shut down, everytime. The way to keep using it now i change the airplane mode (need to hurry when it on for seconds) and it will run normally. I use wifi only to keep using it. My iphone 4 turn out to be ipod now. Somebody know how to fix it? Is it might be hardware or can i just connect to itunes and reset it to factory setting? I need help. Thanks.

I just upgrade the iOS 7.1.1 but nothing works. I havent set to the factory setting yet. So when i turn off the airplane mode, it run normally and when cellular on, it dead and show the red battery icon and lightning even when the battery still 90%.

10.4.9 update, external FW drives no longer power down when ejected?!?!?!

this is really odd. and i have reverted to 10.4.8 until i can find a solution.
i have two different fw400/usb20 external cases. inside each is a 200gb ata hd.
now before 10.4.9, when i ejected the disks from the desktop, they would not only eject, but POWER DOWN as well.
now, when i eject, they dont power down. This was really one of the great things about fw400 drives, and i loved it.
whats the deal here?
the drive enclosures are a Macally 100ac, and a Macally 500bc.

You're not alone. I have three Macally PHR-100AC drives, with a 200 and 300 GB Maxtor drive, and a 320 GB Western Digital drive. All are exhibiting the same behaviour:
The drives don't spin down like the Energy Saver "Spin down hard drives when possible" checkbox is checked (or, for the Terminal-minded, my "pmset -g disk" tells me disksleep is set to 5.) The drives also do not spin down when I eject the drives, as you said. I've tested it over USB 2.0 and Firewire: it exhibits the same behaviour on both.
There are threads at AppleNova (http://forums.applenova.com/showthread.php?t=22914) and MacOSXHints (http://forums.macosxhints.com/showthread.php?t=69428&page=2) with people with the same problem.
I've tested the drives on another system, and they still spin down properly, so the 10.4.9 update didn't permanently damage the drive chipsets.
I emailed Macally, and they said, "Well, that *****, tell Apple."
I have a 2.5" Firewire external drive from EZQuest that still spins down properly upon idle or upon ejection, so it's not like 10.4.9 completely killed that ability.
I'm posting a bug now to Apple's Bug Report form. We'll see where it goes from there.

Iphone 4s shuts down when it battery life gets to about 17%. prior to IOS 7 it would shut down at about 1%. What's up? (Oh, when I plug in recharge, the battery indicates it's at 17% or so. So, I'm not referring to battery drain).

My iPhone 4s shuts down when battery indicater reaches about 17%. When I recharge, indicater shows about 17%, so apparently this isn't fast battery drain. Oh, this happens since IOS7.

See if your phone is one that Apple has noted as requiring a replacement battery: https://www.apple.com/support/iphone5-battery/
~Lyssa

MBP shutting down when on battery

Hi all!
I've got a problem with my one-year-old MacBook Pro: each time (and I mean EACH time) I run it on the battery, it simply shuts down after a while, even when the battery icon/indicator in the toolbar says I've got 70% left.
One quick look in the Battery settings shows that I've already gone through 74 cycles of charge/discharge (by last count), so I'm far from the 500 they say a battery can reasonnably sustain before replacement. The current (guffaw, guffaw) battery is the one I got from Apple last summer when it became clear they'd used a bad batch, the previous winter. It's been working alright for almost ten months, then boom!, it's started acting out again. Should I put in for a new replacement (I took the 3-year warranty), could the last update related to battery life have some unwanted effect on mine, or is there some other way to solve it?
Also, I don't hear the fan(s) in my MacBook Pro at all, but it was running hot from the start, so I finally bought a fancy little tablet with three fans embedded in it, and now the temp is normal; said "tablet" is USB-powered, but when my battery problems started again, every time, the tablet was off.
So...?
MBP Core Duo 1,83GHz 15" Mac OS X (10.4.10)

Welcome to the forums!
The symptoms you describe are consistent with premature failure of your battery. Apple states the symptom as "Battery exhibits low charge capacity/runtime when using a fully charged battery with a battery cycle count (as shown in System Profiler) of less than 300." (Copied from this page, which DigitalDude kindly linked to above.)
I think Ned is incorrect about them replacing your battery for 2 reasons: 1) you say have the 3 year applecare plan, and 2) Apple extended the warranty coverage to 2 years from date of purchase for all Core Duo machines (this is separate from the battery exchange program). The warranty extension for Core Duo machines is stated near the bottom of the page linked above.
Call AppleCare - they should replace your battery.
Hope this helps...

Macbook shuts down when low battery instead of going to sleep

Hi
Well basically my laptop shuts itself down instead of going to sleep when my battery gets low. I also do not get the low battery message. My macbook will usually shut down when it gets to approximately 6% of battery life. What should I do?
Thanks
Sarah.

Have you done the battery update? You might also try to reset the SMC and/or PRAM.
If it doesn't work you may need a new battery. The original core duo batteries have had an extra year added to their warranty so even if your computer is not covered the battery is. My MacBook was doing the same thing except at 28%. Apple replaced my battery and it works fine now.
If you call Apple be polite but firm some people have had trouble from some of the reps. Mine went smoothly I had a new battery in 3 days.

Why is my phone shutting down when the battery is @ 94% doing anything with it? Is the recent upgrade a chance to get us to buy and Iphone 4?

My I phone 3ga 16gb shuts down when I open any app and surf any webpage unless plugged in to the charger. I have 94% battery and as long as I don't do anything with the phone except answer it when I get a call it will stay on. I recently upgraded it to the 4.3.5 os and was wondering if that is my problem? if it is how do I get it back to an older operating system?

Highly unlikely that 4.3.5 itself is the problem as there would be millions with the same problem... there are not.
Restore your 3GS from your backup. If still a problem, restore as new, i.e. without your backup. One of those will most likely solve your problem. If not, you may have a defective battery.

Sudden power down when on battery

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