Phone shutting down with 75% battery life left.

Hello,
I've had my iPhone 3GS for 1 month and it's developed a problem.
The phone shuts down, and won't let me restart it.
Holding down the power button and home button doesn't revive it, not matter how long I hold it on.
If I plug it into charge, I get the battery symbol with a small red bar on the left, and the lightning symbol at the bottom. The phone still won't allow me to fire it up.
After a short while (1 minute or so) the phone lets me fire it up as per normal. As soon as it's up and running, it's telling me I have greater than 70% battery life left!
I've reset the phone preferences, deleted a load of unwanted apps (I was nowhere near full on memory capacity though) and restarted the phone by holding hte power and home buttons until the apple appears. This hasn't solved the problem.
I'm going to try and run it totally flat (whatever that seems to mean) and give it a full charge a few times.
Has anyone else come across this problem?
Thanks in advance,
Pip

Hi,
Exactly the same problem here. I left it to charge for hours, but the red, low battery bar would not dissapear. When I unplugged it, the phone turned off after a few seconds. I managed to turn it back on a few times, and it showed battery charges of approx. 80%. But after a few minutes, it shut down automatically and showed the low batt symbol again . I returned it to the store. No news yet.

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IPhone 5 shutting down with 20% battery life left

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This usually means that your battery gauge needs to be calibrated. Apple actually recommends doing this on a monthly basis, but the advice is buried in the battery info tiphttp://www.apple.com/batteries/iphone.html.
What you need to do given your current problem: When the phone shuts off and it isn't down around 1%, connect to a charger for just a minute or 2, or wait 15 minutes, then reboot the phone (hold HOME and SLEEP until an Apple logo appears). Continue running the battery down until it shuts off around 1%. If it goes off above that value repeat the above process until you really do get to 1% (this will rarely take more than 2 tries).
Once it has turned off and won't restart or reboot charge it with the wall charger for 4 hours without using the phone. This should fix the problem for the moment. Going forward, about once a month run the battery all the way down and charge for 4 hours. This should prevent the problem from recurring.
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IPhone 5 shuts down with 20% battery life

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I've seen threads on this behavior, but no definitive answers. Thoughts?

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

I have an iPhone 5 and it shuts of with 50% battery life left.

SO......It shows the low battery icon when I try to reboot it. It won't turn on unless I plug it in, and when it finally turns back on, I still have 50% battery life. What's going on here??? I called Apple and they ran a diagnostic test and "found" that the battery is "ok." I recieved an email to "get tips" on what to try next and behold I got an unuseful email with links to rate their service and no links that led me in the direction of what to do as far as the software goes. Can someone point me in the right direction? Id rather get your help before I try this phone conversation dumbness again.
btw, I hear some apps may cause this issue? I'm not an app junkie, but would be beneficial to know what apps could cause this.

I'd just like to say that ahs70's post on Dec 1, 2013 at 1:17am on Pg. 9 worked for me as well: https://discussions.apple.com/thread/5338609?start=120&tstart=0
If your iPhone's battery is acting up you need to determine if it's a software issue or a hardware/battery issue. To do that, after syncing your iPhone, erase/hard reset all data and settings from your iPhone to what it was from the factory as new. This can be found in Settings/General/Reset/Erase All Content and Settings. Then test it out for a day or two. If it's still acting up then it's likely a hardware issue and you will need to get your battery replaced. If your warranty is done than check out this link to get a battery kit to replace your iPhone battery yourself: http://www.ifixit.com/Store/iPhone/iPhone-5-Replacement-Battery/IF118-001#produc tDescription
If your iPhone is now working properly after hard resetting it than it's most likely a software issue. This battery issue only started after upgrading to the new iOs7, so it is obviously related to the update not properly installing itself. What has worked for me and many others is to manually update to iOS 7.0.4 using the full downloaded version of the update which is about 1.32 Gigs.
But first you need to find out what model of iPhone you have, click here to determine if it's GSM or CDMA: http://support.apple.com/kb/HT3939?viewlocale=en_US&locale=en_US
Then go here and scroll down to download the iOS 7.0.4 complete update for your device: http://www.downloadios7.org/download-ios-7-0-4-ipsw-file.html
Then scroll up on the download page and follow the instructions of updating your iPhone manually following the instructions below: "IPSW with iTunes"
And your done.
Problem solved.
I only posted this because it was a very frustrating problem that no one really seemed to figure out a solution for.
I hope this helps.
Emile Beaulieu

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I set up the phone with an import from my iPhone 5S and I got into the "death spiral", where the phone was stuck in a constant reboot unless I did the hard restart (power and home button until the phone restarted). I think I fixed that by deleting the apps that were loaded from my 5S backup and installing them fresh from the app store.
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Make an appointment: Apple - Concierge
Contact Apple Care: https://getsupport.apple.com/GetproductgroupList.action

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Last week I updated my iPhone 4S from iOS 7 to iOS 8.1.1. Allthough the battery level is 30%, my iPhone shuts down. I can only start it again by connecting it to a power supply (computer or charger) to get it back to life again. And if it is restarted, the battery level again is 30%. This is very annoying. I regret is very much that I updated the iOS.
Apple please solve this a.s.a.p!

Did you already try to set up your phone as new device?
How to erase your iOS device and then set it up as a new device or restore it from backups
Use iTunes to restore your iOS device to factory settings - Apple Support
If this does not work, contact Apple Support, they can send you a test file to find out if your battery is damaged.
You can also visit an Authorized Apple Service Provider to do so.
iPhone - Contact Support - Apple Support
Since this is a user to user forum, Apple can't hear you, feel free to use this feedback link:
Apple - iPhone - Feedback

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I'm having issues with my iPhone 5. It regularly shuts down with the battery being far from 0%. When I took it to the apple store, a "genius" said that the battery is fine and restored the phone to the factory settings. I set it up as new without touching the backup (with iOS 8), but the iPhone keeps shutting down with a half charged battery. If anythings, the problem only became worse with iOS 8.1. I would appreciate any suggestions on how to fix it.
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Here's the battery info from iBackupBot:
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Hi,
Our MacBook Pro has started to shut down with about 40% battery left. After it has shut down, I press the button underneath the computer and 2 our of 5 lights light up on the battery. I wouldn't mind if it just went to sleep but I totally have to restart it and lose everything I have been working on when it died. The computer used to go to sleep when the battery got to 0%, then I could plug it in and keep working.
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I have read so many articles across the internet with people experiencing this problem. This is the conclusion I came to.
I could not calibrate my battery as my system would hard power down before it got anywhere close to draining the battery entirely. The last 10 cycles on my battery were attempts at calibrating. The most common cause would be because the battery in our macbook pro does contain something close to the charge being reported by the computer, but cannot deliver it. Your fuel gauge is probably not incorrect, especially when the leds on the battery itself show a charge that should be capable of running the machine. Even if it is not calibrated correctly. The internal resistance of the battery itself has compromised the batteries ability to deliver the amperage necessary to run our machines. After finally realizing this, I turned my screen brightness all the way down, and sat all my power settings to max battery life without allowing the machine to go asleep. Then, I went to sleep myself =). In the morning it appeared as though I had a successful calibration and the machine did not power down hard. Depending on how bad of shape your battery is in, this may or may not work. Either way, it didn't matter much. Even with my fuel gauge being correct, if my screen brightness was cranked up and I was doing anything somewhat processor intensive, my battery failed to provide the needed amperage and powered down my system hard again.
The battery really does have the amount of power it says, it just cannot deliver it as fast as needed. At a slower rate, it will work. A replacement battery is needed. I cannot explain the strange jumps/dips in storage capacity but would guess these numbers are a guide, and more than one environmental factor can change this number. Also, once the internal resistance builds up inside the battery and the inability to calibrate happens, it compunds the problem.
My machine is a first gen intel macbook pro. A few months after I bought it, I had battery problems and apple replaced my battery. My machine is 31 months old, it's battery is somewhere around 27. I tried to get apple to replace my battery and they told me no. I was 40% healthy @ 207 cycles. Many people complain about this but it seems reasonable to me, I didn't argue. I do believe my battery failed prematurely, however, it was due to a few factors and I do not think it was the batteries fault. My machine was one of those nice overheating first generation macbook pros. To make the matter worse, one of my internal fans stopped working. I knew this as my istat pro program showed me 1 fan @ zero rpm. I figured I had applecare and had work to do, so continued to use the computer for several months. I did quite a bit of video encoding and processor intensive work. When I would get to work in the morning, my granite desktop was really cold, however, after a half hour or so with the macbook pro running the heat would dissipate through it and warm it up nice and comfortable! lol, some may not think this is funny, but it worked well for me. I frequently had over 180 degree cpu temps and the bar above the keyboard being too hot to lay your hand on and keep it there. I am sure some of this excess heat contributed to the premature failure of my battery. The type of batteries in our machines are killed by heat, charge amount, cycles and age. Probably in that order for most users. So, can I blame apple because my unit ran hotter than it should have because their fan failed! eh, maybe, but I am happy with this laptop overall. I have never had a single laptop for more than 15 months and have had this one for over 30 now.
I ran across this site somewhere, it may have been another user on these forums, I cannot remember. http://www.batteryuniversity.com/partone-19.htm On this page, it talks about our batteries, the effects of heat and level of charge in combination with age. At 77 degrees F., charged to 100% (which is very typical of our machines, or close to it) after one year the battery is 80% as good as it was when it was new. At 32 degrees it is as 94% as good as new after one year. Jump up to 104 F. and the battery is only 65% as good as new after 1 year. Sometimes my computer is running for days and sometimes the environment is warm. Add that to the heat produced by the machine itself and I bet the battery sustained 100 degree temperatures for long periods of time. Just for fun, at 140 degrees and 100% charge in our lithium ion batteries, after only 3 months the capacity is only 60% of its new capacity.
Anyways, that is my battery story. Sum up. The inability to calibrate is due to the batteries increased internal resistance and inability to deliver the charge at a rate needed by your computer even though it appears healthy, or somewhat healthy. You may be able to calibrate by making your laptop drain less power, turn screen brightness all the way down, turn airport & bluetooth off, let hard disk sleep, and let it go. But that will not stop the hard shut down problem, although the fuel gauge will be more accurate. Think of it like this. a 100 gallon fuel tank on a car full of gas. The fuel gauge is correct, it is full. However, the fuel line connecting the fuel tank to the engine is made of a space age material that shrinks as it ages and is exposed to heat. Eventually the fuel line shrinks to the size of a coffee stirrer or small straw. When the motor is turned off the fuel seeps into the small straw. Start the motor, it begins to sip the fuel from the straw. Rev it up (encode video), the motor demands more gas but cannot get it. The motor stalls out (your computer shuts off). Same idea somewhat. Sorry so long

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I wonder if the issue was the cold weather. I was trying to get the phone to discharge per your suggestion and it lasted for an entire day! I am now starting to think that maybe while the phone sat in my car the cold would make the battery discharge faster and kill it. Anyway, I charged it to a full charge without disconnecting just to make sure. Seems to be working fine now.

My iphone 5 is shutting down with 30% battery remaining

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Sounds like a definite hardware problem. You should still be in warranty, so head over to an Apple Genius Bar and they will either repair or replace it. A replacement will be much more likely, and it's free (if in warranty).
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MacBook pro shuts down at 50% battery life!

MacBook Pro shuts down at 50% battery left! Any suggestions. When in use it is usually plgged in

Reset SMC.
http://support.apple.com/kb/HT3964
Choose the appropriate method.

Mac shuts down with 15% battery

It still has battery but it shuts down without notice
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Battery Information:
Model Information:
Serial Number:          W00070GZY77ZC
Manufacturer:          SMP
Device Name:          bq20z451
Pack Lot Code:          0
PCB Lot Code:          0
Firmware Version:          3
Hardware Revision:          2
Cell Revision:          100
Charge Information:
Charge Remaining (mAh):          715
Fully Charged:          No
Charging:          Yes
Full Charge Capacity (mAh):          3344
Health Information:
Cycle Count:          536
Condition:          Service Battery
Battery Installed:          Yes
Amperage (mA):          2273
Voltage (mV):          11691
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          10
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          Yes
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
PrioritizeNetworkReachabilityOverSleep:          0
Battery Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          10
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
ID:          0x0100
Wattage (W):          85
Revision:          0x0000
Family:          0x0085
Serial Number:          0x001225b8
Charging:          Yes
Thanks!

Does it shut down with the power adapter attached? What color is the power adapter led?
Have you tried a SMC reset?
http://support.apple.com/kb/ht3964
Ciao.

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.
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I Phone 4 with I OS 4.2 shuts downs with 30% battery still remaining.

Hi,
I have been an Apple fan for years, But recently my new I Phone 4 has been giving me a lot of trouble.
I purchased the Phone in Oct'10, it was working great till last week. All of a sudden my phone automatically switches off with 30% battery still remaining. when I plug in the charger it starts from 30% percent battery and goes all the way till 100%. but when I start using it, it lasts till 30% and then kaput. no warnings, no signs just switches off and all attempts to switch it back on fail till the charger is plugged in and, then it will start still showing 30% battery and then charging all the way till 100%.
I wonder if this is a software or a hardware issue, I am worried as the Phone was purchased in Singapore where I used to live but have moved back to my home town New Delhi in India. I can't go back to Singapore to get it fixed and if I go to a service center here I don't know how much I might have to shell out.
I'm desperately looking for some help.
Thanks
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to be honest these are the solutions that may or may not work..
first thing I would try is rebooting the phone by holding the sleep/wake button and home button for 15 seconds until you see the white apple logo
if that doesn't work I would restore from backup and if that doesn't work I would restore as new if all that fails unfortunately you would need to take it back to the country you purchased it for replacement

Phone shutting down with 75% battery life left.

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