Laptop randomly switches off when on battery power.

When on battery power my HP DV3500EA laptop randomly switches off (this is only a recent problem). This is when there is still significant charge on the battery. This does not happen when on AC power. Once it has switched off, the laptop is able to be switched back on again and run normally until the next time it switches itself off. It doesn't shut down, it just turns off immediately as if the battery has run out. I have checked that it is not overheating - the CPU temp is generally between 40 and 50 degrees Celsius. I know this isn't a software problem because it does this on different operating systems (Windows Vista and Ubuntu Linux). I assume this means it must be a hardware problem, but I can't work out what it is or how to fix it.
Does anyone have any ideas?

Exact same problem with my Envy 13 running with windows 7... any solution besides bringing the laptop back to the store?

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Randomly Shutting Off When On Battery Power

So, I recently had my logic board replaced because my built-in audio out port wasn't working. I had this done more than a week ago, but just 2 days ago I was using it without being plugged in for over an hour (the battery indicator said I had about 50 minutes left of power) and then suddenly, it just shuts down. I hit the power key, and hear the startup "ding", and then hear it shut down seconds later. I plug it in, and start it up, and it works fine. Then last night I was using it on battery power again, and when the battery said 57 minutes left, it just shut down.
Could this be from my new logic board?

Hi E,
Unlikely, but possible. More likely the batt is dying. Time indicators have never been known for their accuracy, and a batt starting to die increases that problem. Check the condition of the batt (Apple Menu:About This Mac:More Info:Power) and post back.
Message was edited by: tjk

My i phone 3g turns it self off when the battery power gets to about 50 % is there a few for this?

My i phone 3g turns it self off when the battery power gets to about 50% is there a fix for this

This is often due to faulty battery. Make Genius reservation and take iPhone to Apple Store for free quick battery diagnostic testing.

Macbook randomly shuts off while on battery power.

I have a 13-inch Macbook, Late 2008 model, using iOS Mavericks. While on battery power, the laptop will randomly just turn completely off, despite still having plenty of battery power left. I know it's not a calibration issue where the battery is dead but appears to have charge left, since I'm able to turn the computer back on again and continue using it.
Battery info:
Charge Information:
Charge Remaining (mAh): 606
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 2609
Health Information:
Cycle Count: 157
Condition: Service Battery
Battery Installed: Yes
Amperage (mA): -1265
Voltage (mV): 10855
Message was edited by: airheadoh

First try the SMC reset appropriate for your model: Intel-based Macs: Resetting the System Management Controller (SMC)
The information you posted says "Condition: Service Battery" - that likely means you will need a new battery sooner, rather than later, especially if an SMC reset doesn't help the situation at all.
In any case, when new, your battery likely had about 4400 mAh (milliAmphours) Full Charge Capacity.
The Full Charge capacity is down to about 60% of original capacity 2600/4400
A direct replacement from Apple is $129, installed.
Any popular search engine will provide a list of less expensive suppliers, but I cannot recommend any, simply because I haven't used any non-Apple replacement batteries recently. My single experience with one lower-cost supplier for my polycarbonate 2007 MacBook (replaced in 2010) was that the cheaper battery needed to be replaced again within a year. Your mileage may vary.

TS1502 why my Mac laptop is switching off when I plugin my Iphone?

Hello there I have a problem with my Iphone when I try to plugin to my Mac laptop it's switching off automaticly. I never have this problem before and I have my devices for about a year, can you pls. tell me what to do?
Thanks

when I make an entry on my iphone but my calendar will not update
On your iPhone, tap Settings > iCloud
Switch Calendars off then back on then reset your iPhone.
Hold the On/Off Sleep/Wake button and the Home button down at the same time for at least ten seconds, until the Apple logo appears.

Macbook Pro powers off when on battery power

Help! My MBP 17" now powers off after a couple of minutes on battery power. When this happens, trying to boot again, the system will power off again while loading the OS. The only way to get the MBP to boot then is to plug in the AC adaptor.
I've reset the SMC and reconditioned the battery. Both the OS and the battery think the battery is fully charged. This didn't happen before upgrading to Leopard.

I believe the color of the magsafe was green and that it wasn't charging. (The MBP thought the battery was at 96%.)
Here's the profile after I got to work and plugged in my magsafe (which is a second magsafe I keep at work), the color is amber:
System Power Settings:
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): 10
Display Sleep Timer (Minutes): 2
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
Charging: Yes
Battery Information:
Model Information:
Manufacturer: SMP
Device name: ASMB014
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0202
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 5048
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 5472
Health Information:
Cycle count: 97
Battery health: Good
Battery Installed: Yes
Amperage (mA): 469
Voltage (mV): 12390
After charging, the magsafe is green and this is what profiler says:
System Power Settings:
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): 10
Display Sleep Timer (Minutes): 2
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
Charging: No
Battery Information:
Model Information:
Manufacturer: SMP
Device name: ASMB014
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0202
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 5472
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 5472
Health Information:
Cycle count: 97
Battery health: Good
Battery Installed: Yes
Amperage (mA): 200
Voltage (mV): 12368

MAcbook Pro 10.5.1 intermittently switching off when using battery only

Very recently, my macbook pro has started switching itself off. It only happen when using the battery and the charge meter (on the battery) still shows at least 50% charge. It would appear that I can not reboot wither until the mains are attached again. I no longer receive the warning message regarding reserve power, and have previously run the lappy down to 5-6% charge before a recharge.
I have had 10.5.1 installed since its release, and this issue has only just started in the last week, despite daily usage.
Has anyone else had this or similar issues? It seems unlikely thatt it is hardware and I've cchecked the connections and they appear ok. Please help, its very annoying.
Thanks in advance,
Graham

This sounds exactly like what was happening to me last fall - around Labor Day. This is a battery problem not an OS problem. I called Apple Care and they sent a new battery (after we tried all the PRAM stuff, etc.). The new battery took care of the problem.
I hope this helps. Good luck.
Bob Q.

Switches off when I unplug power

This last few days I have started experiencing a horrible problem. When I unplug my power supply with battery fully charged (battery less than a year old) the computer loses all power and WILL NOT start up without the power supply.
When I plug it back in it will restart has reset time to 1970, etc.
Why would this happen out of nowhere and how can I resolve it?
All help very much appreciated.
Thanks,
David

Hi David,
It does sound a bit suspicious. Here's a couple of things to try first. Post back if it doesn't change.
Resetting PowerBook and iBook Power Management Unit (PMU)
1. If the computer is on, turn it off.
2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
3. Wait 5 seconds.
4. Press the Power button to restart the computer.
Resetting PRAM and NVRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.

MBP Shuts off when on battery Power

As soon as i unplug the charger the computer shuts off. here is my info
cycle count 368
charge remaining 4664
fully charged yes
charging no
condition good
battery installed yes
full cap 4666
voltage 12578
thanks

cycle count 368
The useful life of a typical Li-based battery is ~400 cycles. Your battery is simply getting old - it's time to buy a new one.

IPad 4 switches off when i am using it, even when battery is fully charged. Restore function (holding down both buttons) often does not work. Cannot power up iPad. I have updated software, restarted computer, but no success. Please help

IPad 4 switches off when i am using it, even when battery is fully charged. Restore function (holding down both buttons) often does not work. Cannot power up iPad. I have updated software, restarted computer, but no success. I did restore the iPad about 8 times during the past 2 weeks. Just completed another restore. iTunes says the the iPad has been restored and will restart automatically and appear in iTunes when it is ready. That was 30 minutes ago. iPad still won't start. I am looking down the barrel of yet another fruitless restore. What a crap product.

Try a reset:
Hold the Sleep and Home button down until you see the Apple logo.

HT201401 my iPhone 5 randomly switched itself when somebody was calling me and now won't turn on. it had 90% battery, I've tried factory reset, connecting to iTunes and nothing works. the phone is approx 18 months old so surprise surprise out of warranty.

my iPhone 5 randomly switched itself when somebody was calling me and now won't turn on. it had 90% battery, I've tried factory reset, connecting to iTunes and nothing works. the phone is approx 18 months old so surprise surprise out of warranty.

My 5S just started doing this on Thursday: every fraction of a second or so it oscillates between connecting and disconnecting with the charger (USB or wall, doesn't matter). Since it's still under the limited warrantee, I took it to the local Mac dealer (I live in a small town w/out an Apple store) and they shipped it off. I'm waiting now for the replacement--telephonless, too!
What concerns me is that many people seem to be having this issue.
You were right to be suspicious of the Apple store employees. Once they replicated the behavior that you experienced, they should have immediatly offered to exchange your phone. Anything else, in my opinion, is unacceptable. As long as your phone is still doing it, I'd go back, ask for the manager and tell them to exchange your phone.

Iphone 5 switches off when battery still has 15%

After updated to iOS 7, my iphone 5 always switched off when battery still have 15%. Anybody have the same issues?

Sounds as if the battery may need to be recalibrated. Let the battery drain until it turns off. Then connect the phone to the charger and let it charge to 100%. Disconnect and then use it. It should get it back to a better read. The batteries are designed to shut down when the battery has a certain amount of power left. The battery percentage is not always that accurate.
You can take a look at this link from Apple about batteries. http://www.apple.com/batteries/iphone.html

My laptop crashes and switches off when I sync with my ipad 3. Can anyone help me resolve?

My laptop crashes and switches off when I sync my IPAD 3. Can anyone help me resolve please?

Is that a Windows laptop?
If so, in the course of your troubleshooting to date, have you worked through the following document?
iPhone, iPad, or iPod touch: Windows displays a blue screen message or restarts when connecting your device

Random Shutdowns when on Battery Power

Hello!
My Macbook Pro is about 2 years old and it seems to be randomly shutting down when the battery is at about 40%. This has happened twice in the past 3 days. Both times, when the battery was at about 35-45% and was not plugged in with an adapter the computer would shut down without any warning and wouldn't turn on again unless it was plugged in. Once it restated (the full boot up) no applications acted as if they had "crashed" (though, thankfully I was never in the process of working on something, just browsing the internet), and Firefox, when reopened, opened up all my tabs as before the system crashed. Also, once it restarted the battery wasn't depleted and still showed about a 45% charge.
To complicate matters, the computer doesn't die every time the battery reaches 35-45% (one of those days it decharged fully and gave me the reserve battery warning as usual), so it doesn't seem to be a dead cell in the battery, if I understand correctly. The first time it randomly shut down was 3 days ago. Earlier today my computer decharged fully and gave me a reserve battery warning, at which point I plugged it in. However this evening it again died on my at 45% battery life, I restarted it by plugging it in, and then as an experiment unplugged it once it had started up. In the next 10 minutes it shut down once more.
I've removed the battery and there isn't any dust or grime, so that's not the problem as far as I know.
My battery information in the System Profiler comes out like this:
Charge Information:
Charge remaining (mAh): 1731
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 2547
Health Information:
Cycle count: 125
Condition: Check Battery
So, is my battery dead or in the process of dying and I should consider replacing it? I'm still a little fuzzy on how cycle counts work, but 2 years seems like not a lot of time before replacing a battery.
Maybe my computer is overheating (I do have a case on it, but it should ventilate correctly)?
Or perhaps it has a virus? Though I have Norton Antivirus and it runs scans about 3 times a week and has not found anything ever.
I'd like to get this sorted out so I don't have to be paranoid about loosing my data in case I ever am working on something. And I'd really like to not have to plug it in all the time (I'm a college student...plugging it in everywhere on campus can be a pain in the ***).
Thanks!!

mybluehighways,
looking at your battery figures, your description of the computer's behaviour, and the age of the battery it is pretty clear that it has simply deteriorated to the point where it can no longer sustain normal operation.
The short answer is that you need a new battery.
The long answer is that when computers running on batteries shut down unexpectedly it is simply because the battery is not able to provide the transient power needed for a particular task or tasks. It usually occurs because the internal resistance in the battery has built up to the point where, though the battery can still store electricity, it can't deliver it sufficiently quickly to meet the demand.
It is like a car with plenty of petrol in the tank but a faulty fuel pump. It will trundle along quite happily on the flat for quite a while, but if you put your foot down to overtake or climb a hill the engine will stall because it can't get enough gas to meet the increased demand. At this point you can choose the dangerous option to keep on driving on flat roads only, and to never overtake anything or "put your foot down" to get out of trouble until the fuel pump dies completely (which you can be certain it will soon do), or you can get it fixed by getting a new one. The same applies with batteries, though you are "only" risking data loss and hard drive corruption with a computer, rather than your life!
The variation in the amount of time for which it ran before cutting out will simply be due to variations in power demand when doing different sorts of tasks. You will find, too, that the battery will cut out earlier and earlier, under lower and lower power demand situations, as it continues to deteriorate. (Once these batteries start exhibiting this behaviour you can be sure that they are well on the way out)
If you take your battery to an Apple AASP or Apple Store they can quickly test it for you, but if I were you I'd be preparing to buy a new one.
This has nothing to do with viruses or the like. It is a very common experience with the batteries in these MBPs when they are around a couple of years old. My own first battery in essentially the same model became problematic after 18 months.
Cheers
Rod
Message was edited by: Rod Hagen

Portege M400 randomly switching off and restarting

Hi,
I wondered if any one has any suggestions on what's wrong with my laptop? Two days ago it started randomly switching off and restarting. I've checked the following:
- Run Panda Security online check for viruses etc - all ok.
- Checked the system logs but all it records is a 'windows stopped unexpectedly' error.
- Suspecting an overheating problem I took it to pieces, cleaned all the dust from the fan and heat exchanger. Also cleaned all the old thermal compound off the CPU and replaced with new. It is now running much cooler but still randomly shutting down.
- Run a Suse Linux Live DVD to check it's definitely not an OS problem and it still shuts down.
I'm guessing something is shorting out on the motherboard as it will run ok if it's on a flat surface and not moved and I don't press down too hard whilst typing etc. Though it's a bit hit and miss. Has anyone had this problem before and is there any thing else I could try? Also any ideas on how much a new motherboard is? I'm expecting probably expensive :( Unless there's any kind of fix I can do myself? I'm pretty technically minded and don't have a problem with taking it to bits just don't know much about electronics, engines are more my thing :D
TIA, Firedrake
Ps Laptop model number is PPM40E running Vista Business.

Had a chat with a mate of mine and took it to bits again and have noticed that the heatsink that connects the CPU to the heat exchanger and fan isn't very well clamped even though the three screws are tight. It can be wiggled from side to side is this normal? Every CPU heatsink I've seen on desktops is very firmly clamped down and can't move at all. I'd have expect this to be the same on a laptop.
I've adjusted the clamp a bit and it's better then it was but still moves slightly. Now when it switches off the fan goes full blast and the DC IN LED is flashing orange but it doesn't reboot. According to the manual this is an overheating power down so I'm back to thinking it's an overheating CPU problem rather then the motherboard.
Has anyone else had this problem and know how to fix it? In the mean time I've ordered another heatsink to see if that solves it.
Cheers, Firedrake

Laptop randomly switches off when on battery power.

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