Battery life- is such a short battery life normal??

I am looking for the views of other iPhone owners in relation to this question. I feel that the battery in my iPhone may not be working correctly, as it is turning off (ie completely flat) by about 1700hrs after being charged overnight, thus fully charged. I have 3g switched on all the time along with the location services but only ise the internet for 10-15mins max with a few phone calls during the day and by dinner time the phone is dead. Is this normal???
The phone is 6 months old and I feel that it is getting worse.
I know the battery life is not very good compared to "normal" phones but is this what everybody else is experiencing?? I have today switched off 3g and location seviecs to see if that makes a vast difference, and will update this thread.
Comments please.

See this article about batterie life: http://www.apple.com/batteries/iPhone.html to optimize your settings
3G ist using a lot energy, even when your phone is in standby.

Similar Messages

Short battery life

hello
I have arch with gnome on my Toshiba laptop and i have very short battery life.
it ends after about 40min.
it seems to be problem in the system because when i open the computer it told me it have about 2hours and i put it on friend's laptop with vista and it told me i have 92% and 1:10hours left so i think there is(are) any or some process(es) that waste power and so short the battery life.
how can i manage the power consumption and by that to maximize battery life?
10x anyway
ariel

For starters, dim your display backlight. Set the system up to make it happen automatically. Have the shut the backlight off after more than a few minutes of inactivity.
Throttle your processor(s). Set up cpufreq and configure it to use an aggressive governor while operating on batteries. On laptops, you should also enable a governor such as "On demand" to help keep the system cool even when running on AC.
Don't do things that draw power. Try not to use the optical drive. If you want to watch movies, rip them to the hard disk while on AC, watch them from disk while on batteries, and delete them when you are done.
Look into the power management of your hard drive. You might look at allowing it to spin down when inactive, but I find this to not work real well under Linux. They tend to spin up and down a lot, negating the power savings.
See if you can shut things down. Wireless transmitters use a fair amount of power. So do the receivers while they are doing correlation (trying to synchronize to the chipping a spread spectrum channel). If you are not using wireless, shut it off. Look into whether your laptop can shut off other systems it is not using.
Minimize USB devices. They draw power from the system -- especially ipods and cellphones which charge their batteries from their host.
Laptop manufacturers spend a great amount of effort customizing certain operating systems from the American Pacific Northwest to maximize the battery performance of their systems. It can be expected that Linux require a little effort to optimize for power management as well.

Has anyone encountered drastic shorter battery life both on iphone 5 and ipad since updating to iOS 6.1.2? How can this problem be solved?

Dear all,
I am new to this community even though I have been a Apple user for years, so please forgive me if this question is not in the right section.
Has anyone encountered drastic shorter battery life both on iphone 5 and ipad since updating to iOS 6.1.2? I've always been happy with these two products until the update - now the battery life is considerably shorter which is extremely frustrating.
How can this problem be solved? Is there any way to go back to the previous version?
Thanks for your help.

If you update using iTunes the phone is first wiped clean, then the new OS is installed, and finally the backup is restored. After this finishes if you sync your music should be restored. Music is not in the backup, because it is already on your computer and duplicating it would use up a lot of hard disk space.
An OTA update just patches what has changed; it does not disturb content.

Possible work-around for v3.0 short battery life

First: be aware there's a difference between "Push" (which is for some email account types & some MobileMe features) and "Push Notifications" (which is for apps). They are controlled in separate Settings screens.
Short story:
If you've upgraded to v3.0, usually have Wifi ON, and experiencing short battery life, and if you can live without Push Notifications (at least until Apple finds a better solution), TRY TURNING "Push Notifications" OFF.
Alternatively, if you can live without Wifi but need Push Notifications, try turning Wifi off & let the data travel via 3G.
Long story:
First I ran alternate days with Wifi ON, then Wifi OFF, and noticed with Wifi OFF my battery life was nowhere near as short (I could get through a day), but with Wifi ON, I can barely get through half a day. This is very different to v2.21, and in my setup the only significant difference was Push Notifications being ON.
Then today I've been running continuous pings from my Mac to my iPhone, with various combinations of Push on/off, Push Notifications on/off, email accounts on push / fetch / manual, and discovered there's a huge difference in how often Wifi gets turned on when Push Notifications is enabled.
With Push Notifications ON, while your iPhone 3G (and probably 3GS) is asleep, Wifi will be turned on for 15-20seconds every 1 to 2 minutes!
This is in stark contrast to Push Notifications OFF, but Push (for email, MobileMe, etc) ON, where Wifi is on only as often as your email account settings dictate.
This explains a lot, I think. With Wifi OFF, data goes through the 2G/3G radio, which is inherently ON all the time (for phone functionality), so the incremental 'cost' (to battery life) of Push Notifications is comparatively small.
But with Wifi enabled, data is instead sent via Wifi. The incremental cost (to battery life) is dramatically higher having to turn on the Wifi radio, find the WLAN, get an IP from DHCP, then exchange data with various Internet servers, when it happens every couple of minutes!
Though I'm not really sure what Apple can do about this situation. They appear to be turning Wifi on frequently to give the illusion of true (ie timely) push notifications. I think this situation runs parallel to those who found, with v2.x, that enabling Push on email accounts & Wifi enabled had similar major negative impact on battery life. Except now heaps more people want the Push Notification feature. Interesting conundrum...

The main thing that helped me with the short battery life was lowering the brightness. My 3G was so bright I could'nt sleep at night.

When I got a new iPhone5, I experienced short battery life, and system sofware issues were not the cause. The camera also takes a blury picture regardless of lighting and I have the black one. Has anyone else experienced similar problems?

When I got a new iPhone5, I experienced short battery life, and system sofware issues were not the cause. The camera also takes a blury picture regardless of lighting and I have the black one. Has anyone else experienced similar problems?

What makes you so sure it isn't software?
The camera can be focused by take the point of focus on the touch screen.
If it is new as you said, it should be under warranty. Make a Genius Bar appointment or contact Apple with a repair request.

My MacBook Pro is really hot and the fan is on constantly. It didn't use to do this, does anyone know why this is happening? I have a very short battery life, so I have to keep it plugged in probably more than I should.

My MacBook Pro is really hot and the fan is on constantly. It didn't use to do this, does anyone know why this is happening? I have a very short battery life, so I have to keep it plugged in probably more than I should.

Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time, then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.

My ipod has a short battery life from charging too long.

My ipod has a short battery life from charging too long. What can i do about it?

please help

Is it just me, or is anyone else experiencing shorter battery life for their iphon4 since the update to ios5?

Is it just me, or is anyone else experiencing shorter battery life for their iphon4 since the update to ios5?

Yes, I just switched from the 3GS to the 4S and My battery life is a lot shorter! wasn't sure if it is because it was trying to reload all my music or not

Iphone 5 VERY short battery life since 6.0.2 update.. Is there anything to change that? :/

Very short battery life on my iPhone 5 since 6.0.2 update. I got up this morning and it was only half an hour in use and it already lost 10% of battery life! Please fix that apple!

Apple is still signing for 6.0.1 so you can RESTORE BACK to 6.0.1. Just download the 6.0.1 IPSW for your device and then press the shift key while pressing restore (on windows) which will open a window. Select the downloaded IPSW and you'll be back on 6.0.1. And since Apple is still signing 6.0.1 THIS IS NOT A HACK
OR AN UNAUTHORIZED downgrade. So it DOES NOT void your warranty because Apple is allowing you to downgrade because they've allowed the 6.0.1 window to remain open. I did it for a friend's iPhone and it all worked out fine.

The cause of the whine, heating and short battery life.

It seems like we've discovered how we could fix the whine, heating and the short battery life.
If you take a look at /var/log/System.log
You will find this line:
localhost configd[37]: com.apple.SystemConfiguration.DynamicPowerStep load failed
Yes, that's right. Intel SpeedStep is not implemented in Mac OS X.
It seems like Apple wanted to implement it, either the engineer in charge of it was screwed up or apple was hurrying to get macbook pro released...
This also explains why Macbook pro has a higher battery life, runs cooler without whine on a properly configured Windows XP (with updated intel drivers and microsoft hotfix). On Windows XP, when the system is Idle, CPU is throttled to 1GHz.
So we have two options:
1. Get Apple to implement it correctly - but so far it doesnt seem like apple is really concerned about this issue. Or rather, they don't seem to care.
2. Implement it ourselves - A guy called Cryptonome was trying to implement the proper power management for MacBook Pros on Mac OS X to solve these "CPU whine", heating and battery life problems, and he did have some fruitful results, but it seems like he's currently too busy or something to finish the implementation.
Unfortunately I am not a genius so I cannot implement anything like this... anyone?
What do you guys think?

That's exactly what I am doing : expecting a solution from Apple. And you know what, Apple today released a new system update for the keyboard. This update is for all the MacTels including MacBook Pro. And guess the next thing... This update fix a power draw in the MacBook USB... Great... Oh, no, in fact not so great because this bug is THE bug that allows to stop the whine (through Mirror, etc)...
Is there anyone in Apple that tests fixes before to release them ? Do those engineers working on the whine fix have given a look to that patch ? I really hope that Apple is doing something, but releasing this Keyboard patch for MBP now can mean 3 things (IMHO) :
- the whine patch is on the final steps and will be released soon, so killing the workarounds for the whine is not a problem,
- or Apple has a partial (or even none) knowledge about this problem, and they should hire better engineers, because many people made a lot of discovers about this whine, not beeing engineers,
- or Apple definitly doesn't care about this whine problem, and they will loose myself as a customer (and probably others).
MacBook Pro Mac OS X (10.4.5)

Short Battery Life and Very Slow Data on 4S

Short Battery Life and Very Slow Data on 4S,
anyone else noticing the slow speed of data on this phone?

Yes, I measure my slow data on Sprint in kpbs, not Mpbs. Like standard is download maybe 250kpbs, upload 100kpbs (that's 0.25 Mbps and 0.1 Mbps). On the same tower my buddy who has an AT&T iPhone 4 shows 2.5Mbps download and 1.5Mbps upload (that's 2500kbps and 1500kpbs), a LOT faster. Sprint has not been much help.

Hot battery and short battery life after download of Mountain Lion.

Hot battery and short battery life after download of Mountain Lion. Any suggestions?

As in, shortly after install?
Note after you install Mountain Lion it's likely that the Spotlight index will be rebuilt. This will take some time and the machine will run hot. After this completes, which could take 1-2 hours, things should return more to normal.
If they don't, I suggest running Activity Monitor and seeing if you can trace what is eating up CPU cycles.

Important!! Improve the life and performance of the battery.

Reduce the operating temperature and increase battery life
The battery in your notebook PC is designed to provide the necessary amount of energy for the processor while maintaining HP high safety standards. As a result, the battery may not charge or may stop providing power to the notebook when the battery temperature exceeds the specified, design safety level.
If the battery life appears shorter than normal, the battery stops charging before it is 99%-100% full and the battery appears warmer than usual, the battery has most likely reached its designed "no charge" safety state. The battery will no longer charge until the temperature condition is corrected.
Try one of the following methods to correct the battery temperature:
When charging the battery, do not use applications that require large amounts of system resources such as graphic or memory intensive applications, heavy and extended hard drive usage.
Turn off your notebook and remove the battery to allow it to return to a safe operating temperature.
Make sure the notebook PC is operating on a hard surface. Using the Notebook PC on a bed or sofa may block the vents causing the notebook PC to heat up and shut down.
By taking these steps, the battery will return to its normal operating temperature range and continue to charge and discharge as designed.
Calibrating the battery while PC not in use
Recalibrating the battery requires a cycle of a complete charge and a complete discharge. To recalibrate the battery while using the PC is not is use complete the following steps.
The recalibration may take 1-5 hours depending on the age of the battery and the configuration of the notebook PC you own. The PC should not be used while you perform the following steps. Completing all the following steps will also calibrate the battery so that the power meter readings are accurate.
Shut down the notebook PC
Connect the AC Adapter to the notebook PC and to an electrical socket.
Charge the Notebook PC until the Battery Charge light is Green. This indicates the battery is completely charged.
Press and release the Power Button to start the computer.
Press the F8 key several times when the HP Logo displays.
When the Windows Advanced Startup Menu displays, select the Startup in Safe Mode option.
Remove the AC power adapter from the notebook PC.
Allow the battery to discharge completely until the notebook PC turns off.
The battery is now calibrated and the battery level reading on the power meter is now accurate.
If you are not using the notebook regularly then please unplug the AC adapter and shut down the notebook. By following these practices will improve the life and performance of the battery. Here is a quick list of Do's and Don'ts for the care of your Li-On batteries:
Do's
When you receive a new Notebook or Tablet PC, leave the battery to fully charge overnight.
Condition a new battery by using it until it is fully discharged, and then re-charge it fully. Doing this once a month will help to accurately calibrate your battery.
Always ensure the battery is recharged as soon as possible after it becomes fully discharged. A battery will be permanently damaged if left for an extended length of time in a fully discharged state.
Remember that a Lithium-Ion battery will slowly deteriorate; a new battery will always perform better than one that is 6-months old.
Remember that the battery half-life is rated for a certain total number of charge/discharge cycles (see your User Manual or Quick Start Guide for the rating). For example, a battery that is rated for 3 hours and 500 charge/discharge cycles, will still be considered as within specification, even if it only lasts for 1 hour 45 minutes after 500 charge/discharge cycles.
Heat is the worst enemy of a battery. Allow plenty of air to circulate around the Notebook/Tablet PC, so that the battery is kept as cool as possible when charging and also when in use. If provided, use the integrated 'legs' under the Notebook to raise the notebook and improve air circulation.
Remove the battery if storing for several months (the battery should be at approximately 50% charge or higher).
If you use a NoteBus or if charging your Notebooks or Tablet PCs in a confined space, allow for adequate ventilation in order to keep the batteries as cool as possible.
Don'ts
Do Not - Expose the battery to excessive heat or cold (i.e. outside the range of 10-35 degrees Centigrade ambient).
Do Not - Store the battery in a fully charged state (store batteries with about 50% charge).
Do Not - Allow a nearly flat battery to be unused for more than a month or so. The battery will slowly discharge until it becomes fully discharged and this will permanently damage the battery cells.
Do Not - Charge your Notebook/Tablet PC inside a carry case - the battery may overheat.
Do Not - Charge your Notebook/Tablet PC when stacked on top of each other - the battery may overheat.
Remember: Your battery is slowly degrading all the time, even if it is not used. Keeping your battery as cool as possible will slow down this degradation considerably.
For more information please visit the following links:
How to Improve the Performance of the Battery
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01297640&cc=us&lc=en&dlc=en
10 Tips to make your Laptop Battery last longer
http://labnol.blogspot.com/2006/03/10-tips-to-make-your-laptop-battery.html
Disclaimer: By clicking on the link above, you will be leaving HP.com to visit a web site that is not maintained by HP and where the HP privacy policy does not apply. This link is provided to you for convenience and does not serve as an endorsement by HP of any information or contacts that you may find on this non-HP site.
||-Although I am working on behalf of HP, I am speaking for myself and not for HP.-||
//Click on Kudos if my reply was helpful and answered your question//
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I hope the above article will help you guys..
||-Although I am working on behalf of HP, I am speaking for myself and not for HP.-||
//Click on Kudos if my reply was helpful and answered your question//
||-If my answer solved the problem please mark the topic as the accepted solution-||

Any way to measure the life expectancy of a PRAM battery?

Is there any way to measure the life expectancy of the PRAM battery through software? Or must one open the case to determine the left over charge? I have an iMac 5,1 that thus far is doing well. But I am well aware the age suggests the PRAM battery may go soon, and I will have a two week period soon where I won't be accessing it, having to leave it off.

I'd love to know if there is something out there to do this. Just spent a few minutes searching and was only able to find something years out of date for the old 1/2 AA G3 PRAM battery, that only works in OS 9.
The best I've seen is to disable automatic time updating, shut down and unplug for several hours, and see if the clock is still on time when you reconnect to power. This seems very imprecise, to say the least, and you will be draining more power from the battery while it's off wall power.
Of course, you can always take it out and measure it with a volt meter, but it would be insane to go through all that just to measure it and put the same one back.
I think the life expectancy of one of the CR2032s, the lithium button battery which I'm supposing your early Intel, circa 2006, uses is around five years.
If this is your model, replacement doesn't look all that painful. My late 2009 21.5 is a total nightmare with 35 steps. Keeps on going even after the logic board is out. Why Apple puts what should be a user replaceable item in such an inaccessible place -- and getting more inaccessible with each new model -- I have no idea. I guess you're just supposed to throw out the computer when the battery dies.

Expected life/capacity of new OEM battery?

I replaced then battery in my MacBook Pro (13" 2.4 GHz C2D, 8GB RAM, 1TB HD, OSX 10.9.1) back in November because my battery life had fallennoff considerably. Coconut Battery showed it had fallen below 80% capacity. I used a brand new Genuine Apple OEM battery.
Fast forward to tonight. I had connected this MBP to my TV to watch a program w/family. I turned the brightness all the way down. jjust over two hours later, my MBP shut down with no warning. I hooked up power cord and the machine booted. I cranked up Coconut Battery and found:
charge: 3%
current capacity: 5292 mAh
Design Capacity: 5770 mAh
Battery load cycles: 17
This seems rather week, especially compared to my old battery that went 6+ months before dropping to that capacity.
thoughts?

Your question begs another question HOW is the battery treated.
what was it before the movie? .......3% is a problem level to ever drop the battery to.
Contrary to popular myths about notebook batteries, there is protection circuitry in your Macbook and therefore you cannot ‘overcharge’ your notebook when plugged in and already fully charged.
However if you do not plan on using your notebook for several hours, turn it off (plugged in or otherwise), since you do not want your Macbook ‘both always plugged in and in sleep mode’.
A lot of battery experts call the use of Lithium-Ion cells the "80% Rule", meaning use 80% of the full charge or so, then recharge them for longer overall life. The only quantified damage done in the use of Lithium Ion batteries are instances where the internal notebook battery is “often drained very low”, this is bad general use of your notebook battery.
A person who has, for example, 300 charge cycles on their battery and is recharging at say 40% remaining of a 100% charge has a better battery condition state than, say, another person who has 300 charge cycles on their battery and is recharging at say 10-15% remaining on a 100% charge. DoD (depth of discharge) is much more important on the wear and tear on your Macbook’s battery than the count of charge cycles. There is no set “mile” or wear from a charge cycle in specific. Frequent high depth of discharge rates (draining the battery very low) on a Lithium battery will hasten the lowering of maximum battery capacity.
All batteries in any device are a consumable meant to be replaced eventually after much time, even under perfect use conditions.
If the massive amount of data that exists on lithium batteries were to be condensed into a simplex, helpful, and memorable bit of information it would be:
1. While realistically a bit impractical during normal everyday use, a lithium battery's longevity and its chemistry's health is most happy swinging back and forth between 20% and 85% charge roughly.
2. Do not purposefully drain your battery very low (10% and less), and do not keep them charged often or always high (100%).
3. Lithium batteries do not like the following:
A: Deep discharges, as meaning roughly 10% or less on a frequent basis.
B: Rapid discharges as referring to energy intensive gaming on battery on a frequent basis (in which case while gaming, if possible, do same on power rather than battery). This is a minor consideration.
C: Constant inflation, as meaning always or most often on charge, and certainly not both in sleep mode and on charge always or often.
From Apple on batteries:
http://www.apple.com/batteries/notebooks.html
http://support.apple.com/kb/HT1446
"Apple does not recommend leaving your portable plugged in all the time."

Battery life- is such a short battery life normal??

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