At what battery per cent do I recharge to maximize battery life?
I've heard that new Lithium batteries do not have the "memory" issues of old Ni-Cads; but to maximize my battery life overall should I run on battery power until warned; until down to 25%/50%; or does it matter at all. Machine is a 15" MacBook Pro with retina display at 2.7 GHz w/ 16 GB running OS X 10.8.
Here's the deal on Lithium batteries...the kind in your Pro. The two biggest killers are heat and frequent full discharge/recharge cycles. Fact is, these batteries really don't like to be discharged below 30 ~ 35% capacity on a regular basis. Best to charge whenever you can & avoid full discharge/recharge cycles. About every 2 ~ 3 months, discharge to 30% then recharge to full. Even if abused, your battery should last 2 ~ 3 years...its design life. Take care of it & you can get 5 ~ 6 years out of it.
Similar Messages
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I just bought my first iphone. I am so disappointed in the battery life of the iphone 5. Is this the norm for iphones? Are they working on a fix to this problem? Almost wishing I had bought something else.
Without knowing what battery life you are seeing we can't determine if you have a problem. Have you compared your usage to the Technical Specifications?
Talk time: Up to 8 hours on 3G
Standby time: Up to 225 hours
Internet use: Up to 8 hours on 3G, up to 8 hours on LTE, up to 10 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 40 hours
Under normal use, unless there's a problem with your phone, battery life is comparable to any other smart phone and better than some. If you've never owned a smart phone before you will be disappointed with the battery life on all smart phones. You should expect to charge any of them daily. It's a mistake to think of it as a phone at all; it's a very powerful pocket-sized computer that can also make phone calls. -
Just bought an iPod Touch at the weekend - works fine, even with new apps, but was wondering what battery life to expect out of it between charges.
Had read that could get about 5-6 hours on video mode, but is looking more like 2 or so on mine - is there something wrong with the battery on mine or is there something that I'm not doing?Thanks, that does help.
Can anyone comment on what kind of battery performance I should be getting? Apple website says they will replace battery if drops below 50% of the original capacity - is there a way of checking to see whether this has happened? -
After reset to factory settings, still terrible battery life.
My iPhone 4S 64 only six weeks old, but recently my battery life has gone from fair to totally unacceptable. After taking all the steps to minimize battery drain and then going through the process of backing up, I then restored the iPhone to factory settings. No change at all. For example, right now it is sitting without being used at all (yes, 3G and wi-fi are both on)*, and after 3 hours and 46 minutes since full charge (using Battery Doctor) the batery stands at 56% !
I a aware that iOS 5.0.1 is not kind to battery life, but I have had four iPhones and have developed a fairly good sense of what battery life I can usually expect from the way I typically use my iPhone, but this really has me stumped. Can anyone offer any suggestions? Many thanks in advance. pah
* no push, manual fetch for all e-mail accountsI had a similar instance where the battery drained by about 25% overnight. I had to "Reset all settings" and setup the phone as a new phone. After you restored to factory settings did you choose to setup the phone as new or did you restore from backup? I didn't choose to restore from backup because there wasn't a need to.
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Hi
I have a problem when trying to download music or videos purchased on Itunes on my mini Ipad.
When reaching about ninty per cent of download it says error end try later.
What can I do to solve this?
App store and book store work fine and I have no problem with them.
Thank you for your help!
My i Os is updated to the last version.Hello Theresa818,
Thank you for using Apple Support Communities!
It sounds like the cellular data will not activate for some reason on the iPad.
I found this article that will help you resolve this issue here, named iPad (Wi-Fi + Cellular Models): Troubleshooting a cellular data connection, found here http://support.apple.com/kb/TS4249
Check for a carrier settings update.
Update your iPad.
Toggle the Cellular Data setting off and on under Settings > Cellular Data.
Restart your iPad.
Tap Settings > General > About. Locate the Carrier entry and make sure that your carrier is correct.
If your SIM card has SIM PIN enabled, try turning it off: Tap Settings > Cellular Data > SIM PIN.
Make sure you're in an area of good coverage. If the cellular data connection works in another area, contact your carrier to report the original affected area.
Reset network settings: Tap Settings > General > Reset > Reset Network Settings.
Restore the iPad as new.
If none of the above steps resolves the issue, make an appointment at an Apple Retail Store, contact your carrier, or contact AppleCare to troubleshoot further.
I know you may have done one or two of the steps here, so you can skip those.
Take care,
Sterling -
i just reset my i phone 6, it take so long, almost 1 hour , only 10 per cent completed, is it normal. if not what can i do
PolishAngel756 wrote:
Some friends have told me that their phone can last up to 2 days without charging??
If they are getting 2 days without charging, it's unlikely they use their device very much.
A full day is pretty good....and if I'm careful, I can easily get a full day of usage.
For me, normal is charging the iPhone mid afternoon at work, but I use it a lot.
My typical usage is 35 mins of listening to podcasts, checking email, checking my RSS feed, and checking a few apps while I ride my bike when I first get up. Then listening to several podcasts at work.
I typically stream music while working out during my lunch hour and use the Men's Health Fitness app to track my progress.
By about 2pm I'm ready to charge the device as it's getting low (somewhere between 20% and 50%).
I leave bluetooth, Wi-FI, and location services turned on all the time.
Personally, I just do not see the point in going into settings to turn on the feature when I need it... just too much hassle. All of my listening to podcasts and music is via Bluetooth.
I know I'm not the heaviest user, but I just do not see how anyone can realistically make it two days on a single charge, it makes me think they simply do not use the features of the device and would be just as well served with a basic or feature phone. -
At what point is it best to recharge the iPad battery
Do yo wait until it is down to1% or what? This is a new iPad.
The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
http://www.macblend.com/how-to-calibrate-your-mac-iphone-or-ipad-battery/
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
http://allthingsd.com/20120327/apple-ipad-battery-nothing-to-get-charged-up-abou t/
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
http://www.macrumors.com/2012/03/27/apple-explains-new-ipads-continued-charging- beyond-100-battery-level/
New iPad Takes Much Longer to Charge Than iPad 2
http://www.iphonehacks.com/2012/03/new-ipad-takes-much-longer-to-charge-than-ipa d-2.html
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
https://discussions.apple.com/thread/3921324?tstart=30
New iPad Slow to Recharge, Barely Charges During Use
http://www.pcworld.com/article/252326/new_ipad_slow_to_recharge_barely_charges_d uring_use.html
Tips About Charging for New iPad 3
http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad
In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
Cheers, Tom -
What follows is a grouping of some of the most fruitful procedures - from what I've seen in the biggest battery life issue thread - and some background information and discussion for solving or improving the battery life with the iPhone 4S and may be applicable also to devices on which iOS 5.0/5.0.1 has been applied. Credit goes to the respective users who contributed this information to the forum and they should be commended for doing so. This is not a final listing. The goal here is to provide a first stop sort of knowledge base document for newcomers instead of having them perusing the never ending threads where the wheel is reinvented on every page...
Please don't post your questions, usage screenshots, or claims that it worked or not for you or anything here except PROCEDURES/DEBUG STEPS/SOLUTIONS or improvements to the procedures already listed here. Try to use point form and to be as concise and clear as possible. Hope all this helps.
Thank you and good luck!
General info and specs
First, take a look Apple's battery tips, info and specs(obligatory reading for all Iphone 4S users - read it once and for all):
http://www.apple.com/batteries/iphone.html
http://www.apple.com/batteries/
... you didn't read it? loll Always remember this i.e. the definition of "usage":
Usage: Amount of time iPhone has been awake and in use since the last full charge. The phone is awake when you’re on a call, using email, listening to music, browsing the web, or sending and receiving text messages, or during certain background tasks such as auto-checking email.
I'm still not convinced you read the links so here's what Apple has to say in terms of fine tuning your battery life:
Optimize your settings
Depending on how they are configured, a few features may decrease your iPhone battery life. For example, the frequency with which you retrieve email and the number of email accounts you auto-check can both affect battery life. The tips below apply to an iPhone running iOS 5.0 or later and may help extend your battery life.
Minimize use of location services: Applications that actively use location services such as Maps may reduce battery life. To disable location services, go to Settings > General > Location Services or use location services only when needed.
Turn off push notifications: Some applications from the App Store use the Apple Push Notification service to alert you of new data. Applications that extensively rely on push notifications (such as instant messaging applications) may impact battery life. To disable push notifications, go to Settings > Notifications and set Notifications to Off. Note that this does not prevent new data from being received when the application is opened. Also, the Notifications setting will not be visible if you do not have any applications installed that support push notifications.
Fetch new data less frequently: Applications such as Mail can be set to fetch data wirelessly at specific intervals. The more frequently email or other data is fetched, the quicker your battery may drain. To fetch new data manually, from the Home screen choose Settings > Mail, Contacts, Calendars > Fetch New Data and tap Manually. To increase the fetch interval, go to Settings > Mail, Contacts, Calendars > Fetch New Data and tap Hourly. Note that this is a global setting and applies to all applications that do not support push services.
Turn off push mail: If you have a push mail account such as Yahoo! or Microsoft Exchange, turn off push when you don’t need it. Go to Settings > Mail, Contacts, Calendars > Fetch New Data and set Push to Off. Messages sent to your push email accounts will now be received on your phone based on the global Fetch setting rather than as they arrive.
Auto-check fewer email accounts: You can save power by checking fewer email accounts. This can be accomplished by turning off an email account or by deleting it. To turn off an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and set Account to Off. To remove an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and tap Delete Account.
Turn off Wi-Fi: If you rarely use Wi-Fi, you can turn it off to save power. Go to Settings > Wi-Fi and set Wi-Fi to Off. Note that if you frequently use your iPhone to browse the web, battery life may be improved by using Wi-Fi instead of cellular data networks.
Turn off Bluetooth: If you rarely use a Bluetooth headset or car kit, you can turn off Bluetooth to save power. Go to Settings > General > Bluetooth and set Bluetooth to Off.
Use Airplane Mode in low- or no-coverage areas: Because your iPhone always tries to maintain a connection with the cellular network, it may use more power in low- or no-coverage areas. Turning on Airplane Mode can increase battery life in these situations; however, you will be unable to make or receive calls. To turn on Airplane Mode, go to Settings and set Airplane Mode to On.
Adjust brightness: Dimming the screen is another way to extend battery life. Go to Settings > Brightness and drag the slider to the left to lower the default screen brightness. In addition, turning on Auto-Brightness allows the screen to adjust its brightness based on current lighting conditions. Go to Settings > Brightness and set Auto-Brightness to On.
Turn off EQ: Applying an equalizer setting to song playback on your iPhone can decrease battery life. To turn EQ off, go to Settings > iPod > EQ and tap Off. Note that if you’ve added EQ to songs directly in iTunes, you’ll need to set EQ on iPhone to Flat in order to have the same effect as Off because iPhone keeps your iTunes settings intact. Go to Settings > iPod > EQ and tap Flat.
Usage specs for the 4S - http://www.apple.com/iphone/specs.html:
Talk time: Up to 8 hours (12.5% per hour drain) on 3G, up to 14 hours (7.1% per hour drain) on 2G (GSM)
Standby time: Up to 200 hours (0.5% per hour drain)
Internet use: Up to 6 hours on 3G (16.6% per hour drain), up to 9 hours (11.1% per hour drain) on Wi-Fi
Video playback: Up to 10 hours (10% per hour drain)
Audio playback: Up to 40 hours (2.5% per hour drain)
So a scenario of normal usage could be for example: 4 heavy hours of 3G internet browsing (66.4%), with one hour of call on 3G (12.5%) and 22 hours of standby (11%) = 100%
A battery life issue is a problem where the drain is really out of spec either during usage or standby or both. For example, multi-% per minute drain during usage or a 10% drain per hour during standby is problematic. Browsing the internet on 3G during one hour and losing 16-17% is not.
Apple's test methodology for claiming the specs:
http://www.apple.com/iphone/battery.html
Procedures
davidch tips (reset+full discharge recharge):
Go through these steps to address the battery after updating to iOS 5.0.1:
1. Reset all settings (settings app-> general-> reset)
2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
3. Turn off system location services timezone and iAd
4. Fully discharge battery (tilll it shuts off with the spinning wheel)
5. Fully recharge battery (overnight if possible)
In my experience this improves the Standby battery drain issue significantly in most cases. It reduces drain from 2-4% or more per hr to 0.5% or less. It has worked for many, many users now. If it does not work after a few try's you may have a real battery or hardware issue and should contact Apple. Good Luck!
ram130's variant of davidch i.e. additional steps:
Now using davidch original steps and attaching the tweaks I made to get me more usage. As shown on page 29.
Go through these steps to address the battery after updating to iOS 5.0.1:
1. Reset all settings (settings app-> general-> reset)
2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
3. Turn off system location services timezone and iAd
4. Fully discharge battery (till it shuts off with the spinning wheel)
5. Fully recharge battery (overnight if possible)
6. Disable Siri 'Raise To Speak' and REBOOT *( if possible use another camera to verify the infrared is off after the reboot).
7. Set emails, icloud and calendars to fetch. ** test. Mines on hourly.
8. If your in a no signal and your phone is saying "Searching..." even after 10mins, reboot while in that area and after 1-2min it should say "No Service". This mainly applies to Verizon customers and improve battery life in these areas.
9. *optional* Goto Settings > General > Network and you will see "Hotspot.." loading something, wait a few seconds and it should say "setup personal hotspot" then exit out.
* I notice a great improvement after disabling this and rebooting. This increased my "screen on" usage or at least helped it. Make the change.
** I have not tested push yet to narrow down the drain but I had this change on my phone. I believe exchange push is responsible for some stand by drain. As for icloud, haven't notice much of a difference. Just try it for a day. My email still came in fast most times. Again still testing, will report back on these..
buxbuster tips(wifi sync, iCloud):
These are my own tested workarounds that worked for my iPhone 4S and seemed to have worked for others as well :
Workaround number 1. Deselect wifi-sync in iTunes and press sync.
If that doesn't work try :
Workaround number 2 : Remove iCloud, reset network settings. ( I guess this won't work for you since you don't have it enabled ).
If both workarounds fail, you can always try to completely wipe your phone. That also solved some of the cases out there.
rolandomerida tips - i.e. buxbuster and additional steps:
Finally, I solved the syncing error loop. My contacts are syncing flawessly again between my devices and iCloud, and yes, the battery stopped draining, which is the main topic here.
I followed instructions from buxbuster (check his workaround a few pages up!) and an additional BIG step to restore contacts and syncing, as seen in a MacRumors forum.
This is what I did:
1. Make a backup of your Address Book, using the vCard option (or both, it doesn't hurt). Save it for later.
2. In your iPhone, delete iCloud account. When it asks, accept both: delete AND delete from my iPhone.
3. Reset network settings. The iPhone will restart, then will ask you to unlock the SIM card.
4.Turn Wi-Fi on.
5. Add the iCloud account again.
That's for Buxbuster's workaround. For some, it might work just like that. My iPhone repopulated from iCloud after step 5, but I still had that "server error" on iCloud. I had to do some extra steps, since my Mac was not syncing to iCloud and couldn't edit anything on my Mac or iCloud. Syncing back had to be fixed, too. If not, the syncing loop would continue from my iPhone, and the battery would drain awfully again.
1. In System Preferences -> iCloud, I turned Contacts off. I chose "keep on My Mac" those contacts, but I got an empty Address Book after a while. And a few minutes later, iCloud contacts were empty and my iPhone also. It is scary at first! Now, before importing that vCard backup...
2. Turn Wi-Fi off. This is important, since your contact-empty iCloud will attempt to wipe your Address Book from your Mac in seconds after importing.
3. Import your vCard backup to Address Book. Just drag it to your blank Address Book window; it asks if you want to import "x" number of cards. Of course, say yes.
4. Turn Wi-Fi on, and then iCloud contacts on again (System Preferences -> iCloud). It will offer to merge your newly populated Address Book with iCloud (which is empty at this point). It should upload every single contact to iCloud, and then to your iDevices. If not, a fifth step would be to import the vCard file to iCloud, but it shouldn't be necessary.
So, with iCloud syncing working correctly, there is no battery draining! Again, that was my particular issue.
I can't tell if this is the single answer to the widely spread battery draining problem, but it sure can be fixed with these workarounds, and yes, Apple should address the problem with a future update, for we affected customers don't need workarounds in the first place
This is the MacRumors discussion:
http://forums.macrumors.com/showthread.php?t=1256807
And dont' forget to check buxbuster's fix, video, and THANK him!
Miless tips (full 800mb release of 5.0.1 and sanitizing a restore):
As for 4S battery life. Try doing this,
1. Settings>Location Service ... disable all location services you do not need. In particularly Facebook because it drains the battery a lot.
Scroll down to the bottom at Settings>Location services>System Services ... Disable Setting Time zone, location based iAds, Diagnostic & Usage.
2. Settings>Notification>Calendar ... turn off the Notification Centre.
3. Settings>General>Reset ... do Reset All Settings. Doing this will not wipe out your iPhone. It will just Reset the network settings, location warning, keyboard dictionary, etc... but it will clear up some corrupted data there. Generally this will help.
Try these 3 steps first... if it still drains a lot, try the following,
4. Drain your battery down to 1%. Then charge it up using USB from PC ... not the charger. The charger output 1.0 A ( x 5V from USB ... you get 5W power). From PC, output is only 0.5A x 5V = 2.5W power. Charging is slower but trickle charge 4S helps the battery retain its charge better. I think it takes about 3-3.5 hours to charge full from USB/PC compared to slightly below 2 hours using iPhone charger.
If after doing the above still could not solve your battery issues (mine with iOS 5.0 was ok up to step 4, but not iOS 5.0.1).... plug you iPhone to a charger (any charger), from iPhone, access your iCloud ... set it up if you havent. Back up your iPhone data to iCloud. if you do not have enough storage (only 5GB is free), go to details and select the apps you need its data backup, choose only those you really need and leave those unnecessary ones out. Back up your camera roll to your PC/Mac manually as it could be too big to backup to iCloud.... once you have it setup, make sure you are on Wifi ... tap backup to iCloud from your iPhone. It will take a while if the file is huge.
Once backup to iCloud is completed, plug your iPhone to PC/Mac and launch iTunes 10.5.1 (make sure you have 10.5.1)
Click Restore. It will automatically initiate a download of iOS 5.0.1 ipsw for iPhone 4S. Wait for the whole process to finish, ie. download, restore software/firmware.
Once its done, do not set up your iPhone from iTunes. Set it up on your iPhone. Go through the selection. When prompted, select restore from iCloud (from your iphone backup earlier). Keep your iphone plugged into iTunes while restoring backup from iCloud. Because while restoring from iClouds, some data will be synced from iTunes if you plug in, e.g. music, video, etc... unless you bought these content from iTunes store. Apps will be downloaded from App Store from the cloud.
Once it's all done restored. Turn off your iPhone,.. and turn it on again.
Now, hopefully your battery wont be draining so fast anymore. Usually it wont after this. But you need to charge your battery at least 4-5 cycles to stabilize the charge on the battery. I dont know why... but battery life seems to get better and better for me after a few charge cycles after all the above work.
Good luck. Let us know if it works for you.
W. Raider tips (Sirii):
Bottom line for me of things that helped battery life are:
1. Turing off Siri and Rebooting the phone by holding the Home button and Top button down, ignoring the slider, until the phone shut down. (turn off Siri, reboot, and check top front of iPhone 4S against a lesser camera like the front-facing camera on an iPad2 - making sure the IR sensor is off)
2. Fully draining the battery, meaning using the phone until it shuts itself off from a drained battery and then recharging it to 100% about 4, maybe 5 times. I charged it both with a Mac and a wall charger.
Hope this is helpful!
Comments
jmm514 remarks (Twitter):
I may have found something. I had Twitter disabled in my notifications, but got a tweet today that popped up on my home screen. Didn't know I had this enabled. At the bottom of the Twitter notification settings is the home scrren toggle. Since disabling this, battery life seems better. Considering there is no setting for frequency of checking for tweets, it appears the phone is continually connecting to wifi to check for new tweets.
tmksnyder comments (notifications, corrupt data in iCloud):
For me, I found my iphone on wifi mysteriously connecting to my mac. I eventually narrowed it down to the Apple Move Trailers app which keeps a file in iCloud. The phone was trying to sync the file with the mac in the background even when the Movie Trailers app was closed (hitting the red x). Based on my macosx logs the iCloud process that was trying to sync was working directly between the phone and the mac without using itunes by connecting to an https address hosted on the phone. It was connecting every 3 minutes and failing (while phone was awake or awake during during a notification). I also found that iCloud control panel on OSX would error if I tried to delete the file. I fixed it by removing the App and doing a hard reset which stopped the sync. I probably could have turned off iCloud document sync in the phone but didn't think of that. My battery life has greatly improved while at home on wifi. I am now at 28 hrs standby, 2 hrs 20 minutes of usage, and 68% battery. It was ok before where I could get 20-30 hrs standby and 6 -8 hrs usage. My usage today was phone calls, 3g surfing, and music via bluetooth in the car.
I also found even with Itunes iMatch, if I mass updated tages, art work etc, it would hit the phone on wifi even in standby. I was amazed. Granted if I am not doing updates, Match won't hot the phone so this was a once in awhile event. I could drop my percentage by 5-10% in a matter of minutes when doing updates. I think a lot of our problems are background processes, associated with iCloud, notification, and apps. More features means more battery. I think the key thing is to keep track of what has recently been added or changed if battery life gets worse all of a sudden. It may be an app that was recently installed and if possible you may want to completely remove it and not just quit it.
With twitter, i think it uses push notifications so it doesn't need to be running and actively poll on the phone. For instance , if i quit the mail app, i still will get mail notifications and can swipe the message and load mail. Apple Push Notifications servics maintain the connection to the phone and there are likely pings or connection checks that occur for the service on an os level not an app level. This minimizes the load so there arent a bunch of apps all runing and constantly checking. The notification service , if it is contacted from twitter or another service with data, will check the settings you have registered to the with the apple push service and send the notification to your phone. No matter what, there is a drain with notifications. M hunch is once one application is configured to receive notifications, connection checking occurs betwen the push service and the phone so it knows where it is on the network. If it is implemented correctly, these checks arent frequent if you are still and more frequent as you move. The other drain is for when the noification hits and is processsed. If i get 9 emails over night, my screen just popped up for 20 seconds or so to process each message using battery. I would even think that just go from low power to turning n the screen uses more juice than if the device was already on and i get the message. On nights I get no notifications, I see a 3 or 4 percent drop. On nights with a number of notifications, i have seen up to a 10 percent drop. Besides notifications, wifi sync and icloud will poll on the local network and use up battery if the host computer is on and running itunes or trying to sync a data file that is corrupt (which i had with the apple movie trailers app causing my phone to drain). For me turning off wifi sync and remving a corrupt file in icloud solved my battery issues and I get over 24 hrs of standby with 6 to 9 hrs of use and this is with all the normal location services and push serivices turned on.
See http://developer.apple.com/library/mac/ipad/#documentation/NetworkingInternet/Co nceptual/RemoteNotificationsPG/ApplePushService/ApplePushService.html for more info. I think it has a good overview of how the notifications work.Well seems like that rumor of iOS 5.0.1 is finally gone the way of the dogs since developers got a beta of 5.1. So as stated earlier in the master discussion-> I suspect if you are filling up this thread with false post or creating a master set of links to various post that are unreliable you are wasting your time. Press is not going to touch the story due to poor or inaccurate sources which may be links from the master thread. This can include inaccurate information, combination of conflicting post or postings from users which may not own the device. Reputable press organizations have policies that require discloser and strict rules about what is a reliable source for a story. It is clear that many of the post in the master thread, which are links presented here are questionable.
Sorry to say that postings taken without any analysis of their totality have been propagated via various sites, for example sites such as http://www.2012federalbudget(dot)com. (Do not visit but I suspect that this is not the 2012 federal-budget site you would expect based on analysis of the records. There are plenty of sites like http://www.2012federalbudget(dot)com propagating questionable post in these threads.) One site for example in the discussion thread used a self signed certificate, the site had a log in to allow users to enter their OpenID. Seems many of these sites are pop and drop drupel configurations.
So remember this is how the really bad rumor of iOS 5.0.2 got started, the 5.1 memory leak issue, iCloud Issues, call quality, address book, etc.
Some of the postings have been very comical, I think the latest now is a dropbox issue. Seems that the length of the previous thread has resulted in various app engines of some proxy servers/tools reaching their limits.
So I would make sure to know the source of any information you link to. Make sure you avoid entering any information to outside links such as OpenID or Apple ID, these are big prize items for anyone with malicious intent. If you have issues and are a valid user contact APPLE CARE. (Note link is using McAfee Secure Short URL Service, and is https.)
http://mcaf.ee/ricdt
The original solution still represents a high level of success for users having any battery issues.
Install 5.0.1 on your iPhone 4s. Some users posting they are still using older versions, bad fake serial numbers, etc.
Make sure your device can run iOS 5.0.1 and is not altered.
Make sure you use a new Sim, not some cut down version which many users admit to doing. (Again, worth confirming what people are posting.)
Reset the device doing a hard reset and software reset.
Let battery drain and then charge for the full cycle, which is 24 hours.
I think you will find you will get the battery usage that APPLE has stated for the device.
Best of luck, stay safe and thanks -
What can I do to stop my battery life diminishing on iPhone 4S?
I upgraded my iPhone 4S and iPad 2 last week to IOS6. In the last 24 hours I started experiencing a rapid loss of battery life on both devices. In the last 10 hours I had to recharge my iPhone twice. It is losing about 1% per minute. What can I do to stop this drainage?
search this forum. There are many excellent battery saving tips already outlined. No need for another repetitive post,
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I have the 13" Late 2011 Macbook Pro, What are the best Battery Life saver/increaser Techniques?
Specs-
2.4 Ghz Intel Core i5
4GB 1333 MHz DDR3
intel HD 3000 384 MB
How can I prevent My battery from degrading or atleast make the degrading slower
Can Ya tell me the steps or things to do?
I use my Mac a lot, like 6-15 hours everyday.
Someone told me I should keep it plugged with decharging it fully once a week.
is it true?
Can anything else be done?You can use it on battery almost full time. It will slowly discharge to about 95% on AC, but then recharge after dropping below 95%. This is to save the use of the recharge circuits.
You should use it on battery only down to 40% at least once per month. Running it to dead will shorten battery life, not help.
The battery is rated to 1000 cycles. Two recharges from 50% to full is 1 cycle, 3 recharges from 33% to 100% is 1 cycle, etc ...
If you plan to store it unused for 3 months, discharge the batery to 50%, then remove from the MBP to preent the battery going down to 0. -
What can I do about my battery life?
Ok so I know that my iphone is really old. I bought it in 2009 and it has been a really good phone until about 6 months ago when the battery life went downhill. My phone will not hold a charge for more than 5 min. I will let it charge for a few hours and the battery will be full but when I take it off the charger, it takes 5 min for the phone to die. What can I do about this? I've tried restoring it to factory settings and that hasn't worked.
The battery is shot.Lithium batterys have a limited number of recharge cycles. Yours is shot.You would have to have it replaced.I personally don't think it would be worth the cost to replace it on a 3g,especially since you can get the 3gs for free with a new contract.
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What is the Best Usage to Prolong MBA Battery Life?
Hello,
I have a new (1/27/2011) MacBook Air 13" (4G, 256G, 2.13Ghz CPU).
This is being written: 4/29/2011. For some time my charge indicator has not gone above 99% except very occasionally, and then, very briefly. I have noted an apparent decrease in battery 'life' (how long I can run the laptop from full charge to full discharge). Although I usually have only a browser (multiple tabs), WiFi (no Bluetooth) and, sometimes, a word processing application open with brightness at about 60%, but I don't usually get, lately, more than 5 hours max. For example I have running since fully charged (99%) for 2:40 min with the usage pattern described above, and I now have 39% power showing.
My normal usage pattern is to charge the battery fully and then let it discharge completely. If possible, I let it rest for at least a couple of hours fully charged on the charger, and fully discharged off the charger. This is not always possible but I probably do it 40 percent of the time, at least.
"About this Mac" (More Info) shows 66 cycles and Full Charge capacity as 6354 mAh and a capacity of 94%. CocoBattery 2.7 shows 66 cycle and 6352mAh, and age of the Mac as 19 weeks.
I feel that this decrease in ability to hold a charge is excessive compared to what Apple indicates is normal (80% loss in 2 years or 300 cycles). At this rate I will be at 80% of original capacity in 9 months, and 80% of capacity in about 200 cycles.
I have read several of the excellent posts on this forum as well as the Apple info on batteries, battery cycles, and laptop batteries referenced here, but still am confused as the best way to proceed in order to prolong battery life.
Would changing my usage pattern extend the working life of my MBA? Specifically (but not exclusively), would I be better off running on the charger more often, even if I were unable to fully charge or discharge the battery each time? As I understand it doing this will decrease my cycle count per unit of time, but it will also mean that I more frequently begin charging (or discharging) before current capacity (no pun intended) has reached maximum (or minimum).
If the battery were more easily replaced, I would be less concerned (though not happy ) for, otherwise, I am truly pleased with this elegant and generally capable computer.
Any information anyone can provide would be very much appreciated.
Petehi,
so what would you suggest to do here then. let it get to 50% then run the battery down and at say 5-%ish re-charge it fully.
is there anything i could switch off on my phone to save battery power. ive taken off he location services apart from ym locate my iphone, stopped the fetch new data and set it to manaul . this is also the same for the icloud as well.more or less everything has been set to manual or set to off ?? -
My computer is 3 1/2 months old and my battery is dying really fast what can I do to increase the battery life?
Hi,
I asssume it's a laptop!
1st I would run it right down & then do a full recharge, then run it down again + a full recharge..
Check that you do not have any apps running in the background, reset PRAM..
When all's done I usually run a movie & time how long the battery lasts..if after that & no joy call Apple Help.. -
What's the best way to recharge my ipod?
Do I have to wait the battery to end completly, or can I recharge the battery any time?
What's the best way to recharge the battery, so it will last for a long time..Lithium ion batteries don't require much special handling. Charge them when ever you want. You don't have to wait until they discharge completely. In fact, the one thing you really shouldn't do with a lithium ion battery is drain it completely and let it sit that way.
Best of luck. -
T510 looses 1% battery life per week
I have had this laptop for about two weeks and I am loosing 1% battery life per week. It spends all of it's time in a docking station so it always charged. Any suggestions on how to fix this?
Battery does lose some power when not in use; a case of natural discharge. When docked, the battery is left unused and the system will not charge the battery when it is above a certain percentage, so the battery is left untouched unless it falls below that percentage. Hence, even though you're plugged in, the battery is not charged, but the natural discharge continues. It will start charging again when it reaches the minimum buffer zone for charging.
This is the matter of power retention not maximum capacity. 1% loss per week is quite normal. My suggestion: like human body, battery needs excercise, so just use it up. I heard that natural discharge is not a very good thing. I usually empty my battery once a week.
What you should be more concerned about is maximum capacity which you can always check in the battery tab of the power manager.
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