Weird Battery Usage

I'm on my second iPhone 4, since my first one had the yellow screen blobs. The battery was great on my first one, but not so good on this one. I restored the same backup, and even did a settings reset to get rid of anything that may cause an issue.

What's weird is that when I check the usage in Settings > Usage, the standby is correct but the usage is creaping up without me actually using the phone. For example, went to bed last night and usage was around 3 hours and battery level 55%. This morning, it was 3.5 hours and battery was down to 47%. I'd even restarted the phone before going to bed so that nothing was running in the background.

I'm just DFU restoring my phone to see if that helps. And I might delete and re-add my Google Apps Exchange accounts incase there is something going on there.

 

It's odd. Usage is now showing as 1 hour 31 minutes (which I don't think is correct) and standby 4 hours 32 minutes (which is correct). Battery is 80%. If I used the phone, it drops 1% pretty much every minute. Something is really not right here, especially compared to my previous iPhone 4.

 

Push is on, but it always has been so that's not the issue. I'm wondering if the issue is 4.0.1. My last iPhone had 4.0. A few seem to be having issues with 4.0.1.

 

Something is really not right. I charged it over night to 100%, took it off charge at 6.20am and put it in my pocket. Drove to work and didn't touch the phone, and battery is now 98% just 1 hour 10 minutes later (and usage is showing as 7 minutes, which isn't the case).