IPhone 4 battery still draining fast after ios 5.0.1 update

5.0.1 update did not help, my battery still drains just as fast as it did on 5.0. My phone used to last 2 days no problem, now it lasts about 6 hours, I could go to bed at 5% and wake up with 3%, now if I got to bed with 25% it's dead by morning. I have all iCloud services turned off, only Maps turned on for location services, notifications for Phone, Messages, Reminders, Calendar, CNBC RT and Words Free. I have 2 email accounts, one is a pop3 and the other Exchange, both are set to pull every hour and preview is turned off. Is the issue with notifications? the only thing that has changed from 4 to 5 is I have notifications turned on and my reminders & tasks are synced with Exchange. I'm starting to think the issue is with notifications, I tried to turn off email notifications for the lock screen but they still show up.
Are we getting another update after 5.0.1 soon for the continued battery drain issue?
Email notifications continue to display for locked screen even though the option says Off, is there something else I'm missing?

Do we really need another thread, with over 7,000 posts already on other threads?
https://discussions.apple.com/thread/3391947?tstart=0
https://discussions.apple.com/thread/3484755?tstart=0
https://discussions.apple.com/thread/3481668?tstart=0
https://discussions.apple.com/thread/3518760?tstart=0
https://discussions.apple.com/thread/2755090?tstart=0
https://discussions.apple.com/thread/3507356?tstart=30
https://discussions.apple.com/thread/3482083?tstart=60
https://discussions.apple.com/thread/3492588?tstart=60
https://discussions.apple.com/thread/3397244?tstart=90
Then there's the historical issue:
Battery Meter/Life Problems with 4.0.2
4.0.2 guzzling my battery. Your's too?
4.0.1 battery life
Battery runs out very quicky in iOS 4.0.1
Battery nearly nonexistant after 4.0 upgrade
Dead battery after few hours on standby using 4.0 software
3.1.3 battery problem
OS 3.1.3 battery issues
3.1.3 upgrade - shortened battery life?
Battery life cut after 3.1.3 update on iPhone 3G
3.1.3 Firmware is a battery killer - how do I back out this upgrade?
Poor battery life with iPhone 3G running 3.1.2
3.1.2 EXTREME battery drain - what gives?
3.1 Battery nightmare
iPhone 3GS with fw 3.1 – battery life gets even worse
Battery Issues with 3.0.1
BATTERY drain with 3.0
upgrade to 3.0 drains my battery
Battery Drain after Update 2.2.1
Battery Life Radically Decreased after 2.2.1 Firmware Update

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Generally this is a sign that the iPhone had previously been
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iulo wrote:
I believe this must be a major bug on iOS 4.
Sorry, it isn't:
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http://support.apple.com/kb/TS2802
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Hello abdullahfromvenus,
Welcome to the Apple Support Communities! I see that you are experiencing issues charging your iPhone 5. I can understand how frustrating that may be. The following resource provides a few troubleshooting steps that may help to isolate and troubleshoot this issue:
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Cheers,
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