Severe battery drain with iOS 8.1.2

I am having severe battery drain issues with iOS 8.1.2 with all my iOS devices (iPhone 6, iPhone 5s, iPad Mini Retina, iPad Air). I can have my device in DND mode overnight with 100% battery, then the following morning I will wake up to find my device down to 20%. The battery usage graph shows nothing abnormal, just very rapid battery drain. What gives?! I saw a couple other threads mentioning this issue. I have attempted Network Reset and verifying Bluetooth is off, but this is just crazy. Anyone else get a resolution on this or experience this after iOS 8.1.2?

tldr; Check the secd process on your Mac. If it is consuming greater than 50MB of memory...turn off Keychain sync on ALL your devices.
The Full Story
The last few months I've had instances where my iPhone would start getting really hot in my pocket, and the battery would drain at 3x the speed. After much research I also discovered that a process on my Mac (secd) had a vicious memory leak and that single process was consuming 13GB of memory and paging thousands of console messages. After discovering that the process was related to Keychain sync, I disabled keychain sync across all 5 of my devices. Immediately, the battery life on my iPhone was restored to normal.
After I reenabled Keychain sync across all my devices, everything would run fine for a while, but after a few weeks, the problem would resurface. And I would repeat the process of turning it off on all my devices, to effectively reset the iCloud keychain data.
Anyway, Apple does need to fix this, as it affects performance on both OSX and iOS.

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Hi
New iPhone user (first iPhone). Unlocked 4s 64Gb. iOS 5 United Kingdom
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<Edited by Host>

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Adriano

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I want to share some experience about battery drain after IOS 7.1 update

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http://howbees.com/2014/05/15/ultimate-method-to-resolve-battery-drain-issue-of- any-iphone-in-ios7-or-later/
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Severe battery drain with iOS 8.1.2

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