[Nexus 6 Q&A, Help & Troubleshooting] Formhault:
Hey guys!

First of all, this is going to be a lenghty read. I am trying to give as many informations as possible - I'm sure I've left out some info those of you that would be willing to help would need (in that case, I apologize).

If you're willing to aid me in my pursuit of happiness (if my battery doesn't improve, I'll have to get a new phone, maybe the 6P - although I'd rather really not do that and stick to the N6, which is still awesome!!!), thank you a thousand times!

Now, let's begin...

So, my Nexus 6's battery doesn't seem to last me for too long. I mean when compared to others (who get north of 5 hours of SOT, some times 6 or 7), my experience is awful.

I currently have Pure Nexus installed (clean flashed the June build couple of weeks ago - recently dirty flashed the July build), with Elite kernel. I didn't change any kernel settings (except for vibration strenght, which I have set to 50% - I don't like the sound of drills, you know :D ).

I previously had other ROMs like DirtyUnicorns, Chroma... but my experience was quite the same. I've also been on stock for a few days, back in April IIRC; didn't get to fully benchmark the battery (charge to 100% then let it drop to ~15%), but from what I've seen in the 2-3 days I've had it, the SOT didn't seem likely to get past 4 hours, maybe 4.5.

Also, I've used other kernels. ElementalX, RenderBroken, Reventech's Blackbird and the default kernel that comes with PureNexus. The differences in battery life (if any)... were very small. When I was on Blackbird kernel, I even tried Reventech's settings (in Kernel Adiutor Mod), and couldn't get anywhere near his SOT...

I've changed the battery. Literally, purchased a new one (actually, two) on AliExpress. This one's made in May of 2015, unlike my initial battery (which was manufactured back in 2014). Not sure if it's a fake or not - to be honest, even the battery that was in the phone seems fake (askew text and such) but that's not the point here.

I concluded that the battery must be somewhat problematic, because when it hit ~10% or so, it wouldn't last for more than 5 or 10 more minutes. It went down to ~5% and it'd shut down.

Also, when I was charging the phone, if I unplugged it at ~95% or so and plugged it back in a minute later (say, I had to take it off for a quick call), it'd go to 100% in less than 3 minutes. But this is also happening with the new battery, so I'm guessing there is also the software which doesn't properly read the battery all the time.

Now... onto the usage stuff.

Since it's summer time, I HAVE to keep the screen brightness at 80% or 100%, at least when I'm outdoors. When I'm inside, I keep it at around 30-50%.

When I'm inside, I am connected to my Wi-Fi (Huawei Gigabit router, was provided by my ISP for free, so I don't know if it sends some voodoo signals that drain my battery - just kidding, it's probably doesn't do that). It's 2.4 GHz b/g/n, so no 5 GHz ac. Usually >70% Wi-Fi signal strenght.

I disable mobile data when I'm inside. But cellular signal strenght is maximum 99% of the time (5 bars -95 dBm 45 asu most of the time, 4 bars -101 dBm 39 asu when I'm in the hallway, so rarely :p ).

When I'm outdoors, I'm on mobile data (4G). Maximum signal strenght (-90 dBm or so) most of the time, but it some times (rarely) drops to about 3 bars (when I'm passing between towers, I think).

To be honest, I've been on 3G until recently. But since I've switched to 4G, I haven't noticed a significant impact on battery life. If anything, the impact is of about 15 minutes of SOT...

GPS and Bluetooth are mostly off. When and if I need to use GPS, I do that for only 5 minutes a day, MAXIMUM. After I'm done with it, I make sure to switch off the Quick Settings tile.

Wi-Fi and Bluetooth scanning are also disabled. Wake gestures (double tap to wake or swipe to wake) are disabled. As well as Ambient light. Rotation is always locked to Portrait - I only enable it when I really need it. Other than that, Sync (1 gmail account, 1 Yahoo mail account and WhatsApp) is enabled.

Here's a list of apps that I have installed. Note that the apps marked with *** were recently installed, and did not seem to impact the battery life.

17TRACK

yqtrack.app

AdAway

org.adaway

Adobe Acrobat

com.adobe.reader

AliExpress

com.alibaba.aliexpresshd

AnTuTu 3DBench ***

com.antutu.benchmark.full

AnTuTu Benchmark ***

com.antutu.ABenchMark

App Info

cz.marstaj.apppackage

Audible

com.audible.application

Auto Reply Free ***

com.lemi.smsautoreplytextmessagefree

AZ Plugin ***

com.hecorat.azplugin

AZ Screen Recorder ***

com.hecorat.screenrecorder.free

Backdrops

com.backdrops.wallpapers

Battery Monitor Widget Pro

ccc71.bmw.pro

BeautifulWidgets

com.levelup.beautifulwidgets

BetterBatteryStats

com.asksven.betterbatterystats_xdaedition

Calc+

mobi.appplus.calculator.plus

Civic Alert ***

com.ionicframework.ionic191885

ColorNote

com.socialnmobile.dictapps.notepad.color.note

DiscoMark

ch.ethz.disco.gino.androidbenchmarkaccessibilityrecorder

Docs

com.google.android.apps.docs.editors.docs

Docs To Go

com.dataviz.docstogo

Drive

com.google.android.apps.docs

ES File Explorer

com.estrongs.android.pop

Excel

com.microsoft.office.excel

FBReader ***

org.geometerplus.zlibrary.ui.android

FBReader PDF plugin ***

org.geometerplus.fbreader.plugin.pdf

Fing - Network Tools

com.overlook.android.fing

Firefox

org.mozilla.firefox

Focus

com.franco.focus

Footej Camera ***

com.footej.camera

fooView Alpha

com.fooview.android.fooview

Geekbench 3 ***

com.primatelabs.geekbench

Gmail

com.google.android.gm

Google Keyboard

com.google.android.inputmethod.latin

Google PDF Viewer

com.google.android.apps.pdfviewer

Google Play Games

com.google.android.play.games

Google+

com.google.android.apps.plus

Greenify

com.oasisfeng.greenify

HBO GO

ro.hbo.hbogo

Keep

com.google.android.keep

Kernel Adiutor-Mod

com.kerneladiutor.mod

Layers

com.lovejoy777.rroandlayersmanager

Learn C# ***

com.sololearn.csharp

MacroDroid

com.arlosoft.macrodroid

Magnifier

mmapps.mobile.magnifier

Manual Camera

pl.vipek.camera2

Maps

com.google.android.apps.maps

Messenger

com.facebook.orca

Moon+ Reader Pro ***

com.flyersoft.moonreaderp

Moonshine

nexbit.icons.moonshine

Moovit

com.tranzmate

MX Player

com.mxtech.videoplayer.ad

MX Player Codec (ARMv7 NEON)

com.mxtech.ffmpeg.v7_neon

MyVodafone

ro.vodafone.mcare.android

navigate

com.rc.navigate

Nova Launcher

com.teslacoilsw.launcher

Nova Launcher Prime

com.teslacoilsw.launcher.prime

Office Lens

com.microsoft.office.officelens

Office Mobile

com.microsoft.office.officehub

Open Camera

net.sourceforge.opencamera

OpenSignal

com.staircase3.opensignal

PCMark

com.futuremark.pcmark.android.benchmark

Pedometer

com.tayu.tau.pedometer

Piktures

com.diune.pictures

Pocket

com.ideashower.readitlater.pro

Pocket Converter

com.pocketconverter

QR Code Reader

me.scan.android.client

QuickPic

com.alensw.PicFolder

S Health

com.sec.android.app.shealth

Science Journal ***

com.google.android.apps.forscience.whistlepunk

Shazam

com.shazam.android

Sheets

com.google.android.apps.docs.editors.sheets

Shuttle+

com.simplecity.amp_pro

Silhouette

com.xonyxltd.icon.silhouettedonate

Skype

com.skype.raider

Slides

com.google.android.apps.docs.editors.slides

Smart Measure

kr.sira.measure

Smart Tools

kr.aboy.tools

Smart Voice Recorder

com.andrwq.recorder

Solid Explorer ***

pl.solidexplorer2

Sound Meter

kr.sira.sound

Speedtest

org.zwanoo.android.speedtest

Sticky Notes

com.symcoding.widget.stickynotes

Sticky Notes!

com.gs.stickit

Stocard

de.stocard.stocard

Street View

com.google.android.street

SuperSU

eu.chainfire.supersu

SwiftKey Keyboard

com.touchtype.swiftkey

Tapatalk

com.quoord.tapatalkpro.activity

TeamViewer

com.teamviewer.teamviewer.market.mobile

Terminal Emulator

jackpal.androidterm

Titanium Backup

com.keramidas.TitaniumBackup

Translate

com.google.android.apps.translate

Voxel

com.benx9.palmtree

Wakelock Detector Free

com.uzumapps.wakelockdetector

Walloid

com.hashcode.walloid

WallpapersPlus

com.wildstang83.wallpapersplus

Wallrox

com.material.wallrox

wallsplash

com.mikepenz.unsplash

Wally

com.musenkishi.wally

Wally+ BETA

me.wally.android.plus

WhatsApp

com.whatsapp

Wifi Analyzer

com.farproc.wifi.analyzer

WiFi Network Analyzer

com.pzolee.wifiinfo

Wonderwall

com.ignacemaes.wonderwall

Word

com.microsoft.office.word

XDA Labs

com.xda.labs

Xposed Installer

de.robv.android.xposed.installer

YouTube

com.google.android.youtube

Zoniz

ro.gebs.zonizbeacon

Also, just yesterday I installed Greenify and the Xposed framework. I activated the Greenify Xposed module, then set up Greenify as follows (pictures with said settings here). Apps I hibernated are : Adobe Acrobat, AliExpress, AnTuTu Benchmark, Battery Monitor Widget Pro, Civic Alert, Footej Camera, fooView Alpha, Google+, Learn C#, Facebook Messenger, MyVodafone, OpenSignal, Google Photos, Pocket, Shazam, Tapatalk, Touch 24 Banking, Wally+ BETA, WhatsApp and XDA Labs.

Today, my SOT seems unchanged. About 1h30m, and the battery is down to 53%. Usual... it's been like that for some time now. Some times, I can see the percentage going down with my bare eyes - even just doing simple tasks like responding to a WhatsApp / Facebook message makes that number going down by 2 percents every few minutes, and that's not something that should eat so much battery, I'd say. Like... wake phone when battery is 60%, send a few WhatsApp messages, lock the phone 1 minute later and ~10 minutes after, when I wake the phone again, the battery would be at 59% or 58%.

Watching YouTube videos seems to have a smaller impact on battery life. For example, I watched YouTube for about an hour a few days ago (brightness >50%, video resolution 1080p or 1440p, I don't remember) and the battery level went down only about 15% or so.

What's your take on this? How should I proceed?

If you guys need a BetterBatteryStats log, I'll have one ready tonight. If needed, I'll install WakeLock Detector (which I had used before), as well. These are the only battery debugging tools I'm aware of... but I couldn't make something useful of the information they've provided. Perhaps you can...

And, again, thank you!