From: Meat Plow on
On Sat, 26 Jun 2010 19:54:41 -0700, Jeff Liebermann ǝʇoɹʍ:

> On Sun, 27 Jun 2010 01:31:41 +0100, "Arfa Daily"
> <arfa.daily(a)ntlworld.com> wrote:
>
>>I've definitely isolated it now. It wasn't the "Location Services", it
>>was "Notifications" as someone else suggested it might be. I now have
>>wifi set back "ON" and location services set back "ON", and everything
>>is just fine. Battery life is absolutely normal. As soon as you switch
>>"Notifications" back on, the battery rinsing starts. I haven't a clue
>>what it is for, and I'm sure I don't remember seeing it being on, or
>>even actually there ?? in the previous version of OS that was installed
>>before the iOS 4 upgrade. Anyway there is no problem with operation or
>>battery with it off, so off it will stay ... :-)
>
> <http://support.apple.com/kb/HT3576>
> Push Notifications are messages from applications that go merrily out to
> the internet to see if there's anything worth bugging you about. The
> notifications can appear BEFORE you smear the screen with "slide to
> unlock". Under Nofifications, I have eTrade and eBay notifications
> enabled on mine. I get plenty of notifications from both of these apps.
>
> However, it doesn't kill my battery. I leave 15 minute Notifications on
> continuously, and my battery level is roughly where I left it the
> previous night. No unusual drain from Notifications that I can see and
> I have a rather old battery.
>
> If you don't see any applications listed under Notifications, then turn
> it off. You don't need it. If you do want the listed apps to bug you
> when appropriate, leave it on.

Wonder why these would 'rinse' Arf's battery and not yours?
From: Jeff Liebermann on
On Sun, 27 Jun 2010 15:39:12 +0000 (UTC), Meat Plow
<mhywatt(a)yahoo.com> wrote:

>> <http://support.apple.com/kb/HT3576>
(...)
>> If you don't see any applications listed under Notifications, then turn
>> it off. You don't need it. If you do want the listed apps to bug you
>> when appropriate, leave it on.
>
>Wonder why these would 'rinse' Arf's battery and not yours?

Why? It's an Apple product. It's so intuitive and easy, you don't
need to know why.

I ran a crude test last night. At midnight, my iPod Touch 2G showed
97% battery charge (using iSystemPro). 9 hrs later, it's at 89%.
Notification is set to check my stocks and eBay items every 15 minutes
via Wi-Fi.

Here's another app to help run the battery down:
<https://www.ihoundsoftware.com/ihound/template/iPhone.vm>
Much like LoJack for iPod Touch, iPad, etc. I just installed it.



--
Jeff Liebermann jeffl(a)cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
From: Arfa Daily on


"Meat Plow" <mhywatt(a)yahoo.com> wrote in message
news:pan.2010.06.27.15.40.10(a)gmail.com...
> On Sat, 26 Jun 2010 19:54:41 -0700, Jeff Liebermann ǝʇoɹʍ:
>
>> On Sun, 27 Jun 2010 01:31:41 +0100, "Arfa Daily"
>> <arfa.daily(a)ntlworld.com> wrote:
>>
>>>I've definitely isolated it now. It wasn't the "Location Services", it
>>>was "Notifications" as someone else suggested it might be. I now have
>>>wifi set back "ON" and location services set back "ON", and everything
>>>is just fine. Battery life is absolutely normal. As soon as you switch
>>>"Notifications" back on, the battery rinsing starts. I haven't a clue
>>>what it is for, and I'm sure I don't remember seeing it being on, or
>>>even actually there ?? in the previous version of OS that was installed
>>>before the iOS 4 upgrade. Anyway there is no problem with operation or
>>>battery with it off, so off it will stay ... :-)
>>
>> <http://support.apple.com/kb/HT3576>
>> Push Notifications are messages from applications that go merrily out to
>> the internet to see if there's anything worth bugging you about. The
>> notifications can appear BEFORE you smear the screen with "slide to
>> unlock". Under Nofifications, I have eTrade and eBay notifications
>> enabled on mine. I get plenty of notifications from both of these apps.
>>
>> However, it doesn't kill my battery. I leave 15 minute Notifications on
>> continuously, and my battery level is roughly where I left it the
>> previous night. No unusual drain from Notifications that I can see and
>> I have a rather old battery.
>>
>> If you don't see any applications listed under Notifications, then turn
>> it off. You don't need it. If you do want the listed apps to bug you
>> when appropriate, leave it on.
>
> Wonder why these would 'rinse' Arf's battery and not yours?

Yes, it's odd, but it is definitely the cause. There was one app listed,
which is a Caesars Las Vegas 'in house' thing. I don't recall it ever having
told me anything though. It's been on my Touch for a long time, and has
never caused a problem in the past. It's not an app that I use anyway, so
maybe I'll just remove it .

Arfa

From: Bruce Esquibel on
Arfa Daily <arfa.daily(a)ntlworld.com> wrote:

> Yes, it's odd, but it is definitely the cause. There was one app listed,
> which is a Caesars Las Vegas 'in house' thing. I don't recall it ever having
> told me anything though. It's been on my Touch for a long time, and has
> never caused a problem in the past. It's not an app that I use anyway, so
> maybe I'll just remove it .

Time will tell but it's either a bug or a feature in ios4.

That push notification stuff came in with one of the 3.x updates, but like
you, never saw any useful using it, at least on the ipod touch. I had about
8 or 9 apps that had push in them but only one would randomly get a message.

But the behavior with the wifi when it's sleeping is changed with the 4 from
the 3.x stuff.

I noticed it because the router I use for the dsl has a separate "wireless"
light on it, comes on when someone is using wifi. We only have two wifi
devices, the wifes laptop and my iPod.

The morning after the ios4 came out I noticed first thing the light was on,
still on an hour later. Checked and her stuff was packed away, she was
sleeping. The ipod was in sleep mode.

I took a quick look at the local network map on the router and sure enough,
it showed the ipod active and on the wifi, nothing else. Turned it off, the
wifi light goes dark.

Hmmm.

Turning off the push stuff made things go back to the old behavior, ipod
sleeps, the wifi light stays off on the router. If it comes up once in a
while, I don't know, never noticed it.

Only thing I can figure is, with the 3.x if the ipod is sleeping, you just
wouldn't of received push notifications. Maybe now you do with the ios4.
Even with it sleeping, it keeps the wifi in a listening mode or something.

-bruce
bje(a)ripco.com
From: Jeff Liebermann on
On Sun, 27 Jun 2010 09:36:01 -0700, Jeff Liebermann <jeffl(a)cruzio.com>
wrote:

>I ran a crude test last night. At midnight, my iPod Touch 2G showed
>97% battery charge (using iSystemPro). 9 hrs later, it's at 89%.
>Notification is set to check my stocks and eBay items every 15 minutes
>via Wi-Fi.
>
>Here's another app to help run the battery down:
><https://www.ihoundsoftware.com/ihound/template/iPhone.vm>
>Much like LoJack for iPod Touch, iPad, etc. I just installed it.

Argh. I installed iHound to send their server my location every 10
minutes. The default was 3 minutes. I left iHound running overnight.
The battery went from 97% to 32%. Ouch.

I don't think it's Notifications that are sucking the battery power.
Methinks the problem is leaving an application running that uses
notifications or just CPU cycles when the iPod Touch is in standby. I
usually display the desktop before turning off (actually standby)
mine, so I haven't had much experience with what an application can do
to the battery level if left running.

--
Jeff Liebermann jeffl(a)cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558