IPhone 4s shuts down with 30%+ power left...What's the problem?

Phone shuts off with 30% or more battery power. When I try to turn on...it is requiring me to plug in. (red battery warning) I think my phone is still under warranty. Is this something Verizon will handle? Do I need a replacement phone? Frustrating! Help?
Thanks!

Sounds like you need to adjust the power settings on the device

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my iphone 4s shutting down with 20% charge

Hello klmcholden,
The following article provides some useful troubleshooting steps that can help restore proper function to your iPhone.
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
My issue is still not resolved. What do I do next?
Contact Apple Support.
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http://support.apple.com/kb/TS2802
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My iPhone 4s shuts down with just less than half the battery remaining

My iPhone 4s shuts down with just less than half the battery remaining. Is my battery shot?

Hi LucMiranda,
Thanks for visiting Apple Support Communities.
It sounds like your iPhone is not behaving correctly. The steps in this article can help with troubleshooting the battery issue you're seeing:
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http://support.apple.com/kb/HT1476
iPhone or iPod touch displays the low-battery image and is unresponsive
If you see the image below, charge the iPhone or iPod touch with USB power adapter for at least 15 minutes.
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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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My iPhone 5 shuts down with a 10% charge remaining, is there a fix?

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When it shuts off charge for just a minute or two, then restart (hold HOME and SLEEP until an Apple logo appears). Deliberately run the battery down until the phone shuts off at 1%. If it shuts off above 1% repeat the above until you get to 1%. Then charge for 4 hours with the wall adapter without using the phone. This process will recalibrate the battery gauge.
To prevent this from happening again about once a month run the battery all the way down to 1%, then continue until the phone shuts off. Apple recommends this in their battery help article, but they don't say why you should do it. The have some hokum about "keeping the electrons moving." Honestly! The iPad battery tip gives the correct reason.

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Macbook Pro shuts down with 40% battery left... does not just go to sleep

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.
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Since iOS7, iPhone 5 shuts down with no batter, but shows 30%+ once I plug it in

My iPhone batter life has gotten markedly worse since upgrading to iOS7. And now it has this annyoing habit of shutting down, as if out of battery, when plugging it in reveals 30% plus charge on batter when it restarts. I am not sure what i need to do here. This is less than a year old, and I am now at least another year plus on my ATT contract before I can get a new one.
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In response to the other posts, I have not had any issue with the battery until the update to IOS7 and I have been using the phone for over a year. I am not suprised that the store would say the battery was bad, the phone thinks it is and shuts down. I do not know what plugging it in does for the phone, but after I plugged it in for just a few minutes it lasted for several hours. it was not that the battery was dead, but how the camera works with the system on IOS7. I do not know if taking a picture and saving it while using the flash cause a large draw etc, but whatever it is the system then thinks the battery is dead when it isnt. The hard part is once you apply power it will go away and there is no way to verify the issue. Even if it is weaker battery it should not just shut off with 20% power and then not work until power is applied. The battery is not dead as it has worked for several hours afterward. I have not used the camera in those cases for fear of losing my phone until I could get to a power cord. I am not aware of it happening twice in a row, but I will test it next time I am near a power cord after it dies. I would also concur, that this is a quick failure for the battery also as the phone is just over a year old.

IPhone 5 shuts down with over 30% battery remaining

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Ehtasham Shahid

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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IPhone 5 shuts down with 20% battery remaining

I apologize if this issue has been discussed already. It's a hard topic to find because I do not have an issue with my battery draining fast (it's what mostly come up when I try the search) but it's just that, as of late, my phone shuts down when I have about 20% of the battery remaining. I am out of warranty by only a month, this seems to have started with iOS 7.

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.

Using Safari and Skype and the fan is going full power. What is the problem and how to fix it?

My 13-Inch MacBook Pro has been experiencing heat problems while I go on to applications such as Safari, Word and Skype. It's never done this before.
What's the problem here and how can I fix it?

Skype is the one giving you problems.....
When sitting at idle, Skype can use as much as 90% of your CPU's resources. The reason I know this is because I use Skype and have to shut it down once the fans start spinning and my Macbook starts getting hotter.
Another solution is to downgrade Skype one version down. That seems to work for a few people.
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IPhone 5 shutting down with 20% battery life left

My iphone 5 is turning off with 20% battery life showing. I've done all the updates. When I plug it in, battery life immediately jumps to 30% left. Any clues? It's not overheating and usually I'm just typing a text message. It's shut down twice now as I try to send a picture with the message. Thanks in advance for any help.

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.
If this does not work your battery may be failing. As it's still in warrantly take it to an Apple store for repair."
I am having the same problems with my phone and found this discussion last night and tried to follow this procedure but I could not get my phone to turn on and run down to 1%. It shut itself off from 15%-7% almost instantly. I rebooted it as recommended by others and turned it on and let it shut off until it got down to 7% then it would no longer turn on. even after sitting for a little while. I have charged my phone to full overnight with the charger that it came with and will wait to see if the problem persists. I am very frustrated with this and found out that my phone is a few days outside the 1 year warranty. If anyone has had this situation and found a fix without getting a new phone, please let me know.

IPhone 4s shuts down with 30%+ power left...What's the problem?

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