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4.3.3 Has anyone noticed a change in power consumption?

This is a discussion on 4.3.3 Has anyone noticed a change in power consumption? within the iPad OS forums, part of the Apple iPad Discussions category; Originally Posted by f4780y I hate to point out the obvious here and I'm not trying to be smart, BUT, 3% drain overnight seems perfectly ...

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  1. #21
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    Quote Originally Posted by f4780y

    I hate to point out the obvious here and I'm not trying to be smart, BUT, 3% drain overnight seems perfectly normal for an iPad under standard circumstances and configuration to me.
    According to my calculations, assuming overnight is about 8 hours, that gives you 11 days of standby. Pretty good in my book, unless you are the type that always has all your services switched off completely.

    I appreciate you think you were getting zero percent battery drain previously, and sometimes you can observe that if you iPad was fully (over) charged to 100% when you left it (it can stick for slightly longer than normal at 100% in common with any battery powered deceive of this type), but losing less than 1% in standby over a period of say 8 hours would be exceptional. It would equate to something like 33+ days standby. I don't recognise that as being the normal standby time you can expect from an iPad.

    I do find it interesting that whenever a new version of iOS comes out there are always people who seem to observe what they consider to be additional drain. Perhaps it is more to do with observing the device more than before? I don' know.

    Anyhoo, my advice would be don't be worried by this. It seems fine... I don't see any evidence anywhere that 4.3.3 has a battery drain issue.
    Thanks for the info, but no matter what my % is at the end of the day it is always the same in the morning. I have push etc off. Usually it will stay at 100% for over and hour after a full mains charge, but now it starts dropping quite quickly. Maybe the battery level is now more accurate?

    I will keep an eye on it

    Sent from my iPad 2 using iPF
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  3. #22
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    Quote Originally Posted by Harters

    Thanks for the info, but no matter what my % is at the end of the day it is always the same in the morning. I have push etc off. Usually it will stay at 100% for over and hour after a full mains charge, but now it starts dropping quite quickly. Maybe the battery level is now more accurate?

    I will keep an eye on it

    Sent from my iPad 2 using iPF
    Cool. And if you do have everything turned off when in standby (no push, wireless, 3G, etc,) you are supposed to be able to squeeze 720 hours of standby out of the battery according to Apple. However that is absolutely a theoretical maximum and you would have to leave it in standby (never turn it on once) to actually achieve it.
    Out of interest, did you upgrade or restore iOS 4.3.3. I am of the opinion an upgrade can introduce something into the mix which was not there before, perhaps related to wireless..., but that's just a theory.
    Try resetting your network connections (thus forgetting all your wifi) and see if that improves things. I've seen it benefit others.
    15" MacBookPro with Retina Display 16GB 3.4GHz i7 256GB | iPad4 WiFi 32GB 6.1.2 (evasi0n) | iPad3 4G 64GB 6.1.2 (evasi0n) | iPad2 3G 64GB 5.1.1 (redsn0w) | iPad1 3G 64GB 4.3.3 (jbme) |
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  4. #23
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    Quote Originally Posted by f4780y

    Cool. And if you do have everything turned off when in standby (no push, wireless, 3G, etc,) you are supposed to be able to squeeze 720 hours of standby out of the battery according to Apple. However that is absolutely a theoretical maximum and you would have to leave it in standby (never turn it on once) to actually achieve it.
    Out of interest, did you upgrade or restore iOS 4.3.3. I am of the opinion an upgrade can introduce something into the mix which was not there before, perhaps related to wireless..., but that's just a theory.
    Try resetting your network connections (thus forgetting all your wifi) and see if that improves things. I've seen it benefit others.
    Hmmmm the plot thickens. Since my last post at 11:07 my battery has gone from 29% to 27% and I closed off all apps before I put it to sleep (not something I usually do)

    I will delete my network connections as you suggest and will do a full shutdown too.

    I did an upgrade as far as I know....... Just did what iTunes told me to

    What I have noticed is that I can have quite a good signal, but as soon as I click on a link the signals drops right down low, pauses then seems to recover again.


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    Last edited by Harters; 05-10-2011 at 06:57 AM.
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  5. #24
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    It is also possible that the battery drain is the same, but the software-based reporting was changed.

  6. #25
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    Quote Originally Posted by Harters
    What I have noticed is that I can have quite a good signal, but as soon as I click on a link the signals drops right down low, pauses then seems to recover again.
    Are you talking wifi, or 3G signal? Definitely sounds like you need to reset your network settings.
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  7. #26
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    Quote Originally Posted by f4780y

    Are you talking wifi, or 3G signal? Definitely sounds like you need to reset your network settings.
    Wifi, I don't have any issues with 3G at all

    I have reset all my network connections and will see what happens

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  8. #27
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    ipad2 battery drains dramatically even there is not any app running on background

    Here is another test that I just made.

    I closed every single app. I even turned the airplane mod on. While nill app working on task bar, I just kept sliding the screen (to keep the ipad alive), 1% of battery could last only 5 minutes.

    What do you think?

    Either batery is weak
    Either battery display fails
    Either something works on background and drain the battery

  9. #28
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    Quote Originally Posted by cemturc
    I closed every single app. I even turned the airplane mod on. While nill app working on task bar, I just kept sliding the screen (to keep the ipad alive), 1% of battery could last only 5 minutes.

    What do you think?
    The single largest energy draining part of the iPad is the display. On which brightness level are you carrying out your test?

    However, in your case, when the iPad is not running any complex apps, the battery should easily last 10h, especially when both Wifi and 3G are turned off.

    Just one question regarding how you have carried out the test.
    For how long have you been watching the screen? Obviously there will be some inconsistencies, if it is just for a few minutes. But if the battery really drops 10% in 50min, than the Apple advertised battery life is 20% longer than the one your iPad lasts and it may be a faulty battery. As said before, the brightness level is the single most significant factor determining the battery run-time. But if the brightness is low, the iPad battery may not be fully functional.

    This is neat, my post got carried over into this thread, even though it was posted after the original thread had been moved, as iPF gave an error "Invalid thread" on posting

  10. #29
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    Quote Originally Posted by earlyadopter View Post
    Mine doesn't charge through my keyboard USB port. It may be Apple playing mind games with me. I'll keep an eye out and report back. I should has my new iPad 2 next week...this may all be moot.

    Sent from my iPad 64 GB, WiFi, 3G using iPF
    Do you mean the USB plug on your keyboard or the USB plug that you plug your keyboard into?

    If the former, those plugs are for very low power devices, like a mouse. They're underpowered and made for just a single, power sipping device.

    If the latter, well, that's a whole 'nother story.

  11. #30
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    Mine is still ticking down since I have done a network reset.

    3% in 3 and a half hours of being in sleep. I am going to let it run right down then give it an overnight charge and see if it changes back to how it used to be

    Oops there goes another 1% .......

    Sent from my iPad 2 using iPF
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