Re: PB Sudden Battery Drain
that looks like 1% every 2 mins or so. I would start with uninstalling your last couple installed apps and go from there.
Re: PB Sudden Battery Drain
OP: In your Battery Guru post the power usage dropped considerably when you say you changed your email notification. Since the power was reported at 0.146 watts assume you were in standby. This is not unusual value. If I go into standby in airplane mode with only Battery Guru running I can get as low as 0.04 watts. Suggest you try this. After you go into standby wait a couple of minutes to let BG get the new reading and swipe the screen back on to check. Repeat a couple of times to be sure you have the correct reading.
Re: PB Sudden Battery Drain
OP: Does Advanced App Manager give you any info on apps which are operating in the background? Any app which you have authorized (maybe by default) to send you notifications may try to use your wifi frequently even with wifi off.
Re: PB Sudden Battery Drain
try reinstalling the apps or email one at a time and see if it comes back. I'm leaning towards one of the apps. same thing happened on my gfs pb. now I'm always wary of which apps I install, especially if its a poorly written android port.