In the past few days, I've noticed that my iPhone 6 Plus battery has gotten quite hot. Seeing that it is only a couple months old, I would confidently assume that it's a tweak that is the culprit. I've included my tweak list. iPhone 6 Plus, iOS 8.1.2, TaiG Jailbreak Thanks!

Packages

7-zip (POSIX) - 4.57-3p Activator - 1.9.2 adv-cmds - 119-5 AdvancedSettings8 - 1.0.1 Agape - 0.0.1-96 Ah! Ah! Ah! - 1.1.5-1 Air Traffic Control - 1.1-1 AirPlay Enabler - 1.1 AlienBlue++ - 1.1-3 Allarm - 1.0 Almpoum - 1.3-26 AlwaysShowSublabelsOnSnapchat - 0.0.1-2 Android KitKat Status Bar - 1.1-1 Android L Lockscreen - 1.0 Android Solid - Cell & Wifi Signal - 1.0 Animate iOS 8 - 1.0.1-1 AppColorClose - 1.0-1 AppInfo - 1.6.2 Apple Loading Wheel - 1.0 Apple Watch Boot Logo - 1.0 AppList - 1.5.9 APR (/usr/lib) - 1.3.3-2 APT 0.6 Transitional - 1:0-23 APT 0.7 (apt-key) - 0.7.25.3-3 APT 0.7 Strict - 0.7.25.3-8 APT 0.7 Strict (lib) - 0.7.25.3-13 APX Loading Wheels - 2.0 Archiv Multi Touch Gold - 1.0.0 AutoPause - 1.0 BadgeClearer - 4.0.0 BannerBuddy - 0.0.1-8 Bariol Font iOS 8 - 1.6 Base Structure - 1-4 Battery Percentage Only - 1.0-1 BatteryLife - 1.6.1 Berkeley DB - 4.6.21-4p BetterCCSliders - 1.3 BetterDelete - 1.0 betterFiveColumnHomescreen - 0.6-1 betterFiveIconDock - 0.9-1 BetterPasscodeKeypad - 0.2.1-1 BigBoss Icon Set - 1.0 Bigify - 1.6.3 Bloard - 0.1.0 blur Lockscreen - 0.1.2 Blur Remover - 0.0.3-18 Bolt - 0.8.1.1 Boover - 2.1-8 BounceNotify8 - 2.0.1-1 Bourne-Again SHell - 4.0.44-15 BytaFont 2 - 2.4.1 bzip2 - 1.0.5-7 Calendar Pro for NotificationCenter - 1.5-1 CalmCall - 1.0.3-1 CCBackground - 1.3-1 CCfix 8 - 1.0-3 CCLiveBrightness - 0.0.1-40 Cephei - 1.2 CheeseCake - 1.1b CircleIcons - 1.1.3-15 ClassicDock - 1.1-8 Climacons iWidget - 1.0 Cobalia - 1.0-1 ConfirmKill - 1.0-23 Core Utilities - 8.12-12p Core Utilities (/bin) - 8.12-7p Cou - 1.0-4 CrashReporter - 1.9.0-1 cURL - 7.39.0-2 CustomWidgetIcons - 1.1 Cycript - 0.9.502 CyDelete8 (iOS 7 and 8) - 1.0.2-1 Cydget - 0.9.4013 Cydia Installer - 1.1.16 Cydia Substrate - 0.9.5101 Cydia Translations - 1.1.12 Cylinder - 1.0.2 Darwin Tools - 1-4 Debian Packager - 1.14.25-9 Debian Utilities - 3.3.3ubuntu1-1p Deepcove - 1.0 DetailedBatteryUsage - 1.1 Diff Utilities - 2.8.1-6 Dim - 1.3 Disable Parallax Effect - 1.3-1 Discreetify - 1.1.1-1 diskdev-cmds - 421.7-4 DisturbMeLater - 0.0.1-113 DockShift - 1.6.5 DoubleCut - 0.2-1 DoubleTapToSleep - 1.1-1 Drunk Clock - 1.2.2 Emoji Twitter Theme - 1.0 Enlightened iOS8 - 2.0-3 f.lux - 0.998 f.lux Flipswitch - 0.3 FBNoNeedMessenger - 1.0-3 file-cmds - 220.7-3 Find Utilities - 4.2.33-6 FlipControlCenter - 1.0.1 Flipswitch - 1.0.6 Flurry - 2.0-1 Folder6Plus - 0.0.4-1 FolderIcons (iOS 8) - 3.1-3 ForceGoodFit - 1.0.3-1 FullNC - 0.1.1-2 Fully Masked Passwords - 1.2-2 GhostPrefs - 1.5r-0 GNU Privacy Guard - 1.4.18-1 Go.Away.Period.Button - 2.0 Gotham for iPhone - 1.0 grep - 2.5.4-3 GridSwitcher - 1.5-3 groovyAPI - 1.0.4 GroovyLock - 1.7.3 gzip - 1.6-7 HideMe8 Lite - 0.0.3-2 Hosts File Flipswitch - 1.0-1 iCleaner - 7.3.2 Icon for Reddit repo - 1.0-1 IconBundles - 0.2-1 IconSupport - 1.9.4-2 IfFound Lite - 1.0.5-10 iFile - 2.2.0-1 InfoStats - 1.1.4 iOS Firmware - 8.1.2 iOS7 ColorFlow Cydget - 0.1.0 iOS7 RisingBars Cydget - 0.1.3 iOS7 Typo5 Cydget - 0.1.0 iPhone Firmware (/sbin) - 0-1 iWidgetGoogleSearchBar - 0.1 iWidgets - 1.2.3 iWidgetTapper - 1.5-7 Jetslammed - 1.0 libcolorpicker - 1.1 libcrashreport - 1.0.2-1 libpackageinfo - 1.0.0-1 libPassword - 2.2.0-2 libstatusbar - 1:0.9.8.1.1 libsymbolicate - 1.8.0-1 LockGlyph - 1.1.9-10 LockSmoother - 0.1A-2 LS Patience v1.11 - 1.0.0 LZMA Utils - 4.32.7-4 M'Flat Icon Pack - 3.3 M2 iWidgets Pack - 1.3 Möbius - 1.2.2 Media Downloader - 1.4 MessagesCustomiser - 3.0~beta2 Minimal Hosts Blocker - 4.3.4 Minimal MIUI Clock Widget - 1.0 Motivational Quotes iWidget - 1.0 Movie Box (iOS 7 & iOS 8) - 3.2.1 MTerminal - 1.0-4 MultiIconMover - 1:1.1.2-2 Music Box - 2.2.3 NCIfNeeded - 1.1 NCWallpaper - 0.2 Netflix++ - Trailers and More - 1.2-1 New Curses - 5.7-13 No Passcode LockOut - 2.2b-1 NoAdStoreOpen - 0.0.2-1 NoAnnoyance - 0.3.0~beta4-1 NoAppStoreRedirect - 0.5 NoAudioRecorder - 1.0.1-1 NoBlur - 1.2.2-1 NoDock - 1.0 NoIconDot 8 - 0.1-1 NoLiveClock - 0.0.1-5 NoNearMe - 0.0.1-8 NoPassHighlight - 0.0.1-1 NoPhotosCollections - 1.0.0-1 NoSlowAnimations - 4.2.1 NoteCreator - 1.3 NotFrequently - 1.0-1 NoTouchCancelReply - 1.0-17 NoTracking+ - 1.1.2-1 nupsidedown - 1.0-5 OneTapClear - 1.0.1-1 OopsLock - 1.0-40 OpenOnSearch - 1.1.3-2 OpenOther for iOS 8 - 1.2-2 OpenSSL - 0.9.8zc-11 PAM (Apple) - 32.1-3 PAM Modules - 36.1-4 PandoraSkips - 0.0.5-1 pcre - 8.30-5p pincrush - 0.9.2-1 PM, really? - 1.1-1 Power Tap - 1.1.1-24 PowerBanners - 0.0.1-3 PowerSoundDisabler - 1.1.1-6 PrefDelete - 1.3.0 PreferenceLoader - 2.2.2 PreferenceOrganizer 2 - 2.5.1-1 Priority Hub - 1.3.4-1 Proclivity Preview 1 - 0.1-2 Profile Directory - 0-2 PullToRespring - 0.0.1-35 QuickGoogle - 0.0.1-30 RASBerry - 1.1-1 Reachability (Action) Flipswitch - 0.0.1-1 Reachability (Toggle) Flipswitch - 0.0.1-1 ReachApp - 0.0.1-860 readline - 6.0-7 ReBars - 2.1 Record 'n' Torch - 1.6-4 ResetIcons Flipswitch - 1.0-1 RisingBars Lockscreen - 0.1.1 Roboto Light Font - 1.1 RocketBootstrap - 1.0.2 Roomy - 1.2 RoundDock - 1.0.1-1 SafariRefresh - 2.0-1 SaveGram - 1.2-1 SBHTML - 1.2.4 SBPowerAlert - 8.1-68 ScrubAround - 1.1 sed - 4.1.5-7 shell-cmds - 118-6 ShowCase - 1.3.5-1 SimplePasscodeButtons - 0.0.4 Sleek LS - 1.0-1 SleekCode - 1.1-4 Slide2Kill8 Lite - 0.0.3-3 SnowSwitch - 0.1-2 Soft Remix 2 - 1.5 SorryLowBattery - 1.2.1-1 Space'Flat - 1.4 Spectral - 1.0.3-1 Speed Intensifier - 8.3-2 SpotLock - 0.5 StickyBanners - 0.0.1-5 Stripe - 0.3 Substrate Safe Mode - 0.9.5000 Support Unsupported Accessories 8 - 1.0-1 SwipeButtonColor - 1.0 SwipeSelection - 1.4.2-1 system-cmds - 433.4-12 SystemWidePredictiveText - 0.0.1-11 TaiG 8.0-8.1.X Untether - 1.1 TaiG AFC2 - 0.1 Tape Archive - 1.19-8 TechSupport Framework - 1.2.1-1 Theme for LockGlyph - Beats - 1.0 Tintch - 1.0 ToneEnabler - 1.1-7 TransparentVolume8 - 0.0.2-5 TypeStatus - 1.3~beta1-2 Typo5 Lockscreen - 0.1.1 UIKit Tools - 1.1.9 unBold - 1.0.1-2 Uniformity2 - 0.2.0-1 UnlimMusic - 1.1-7 UnlimTones - 4.8.2 UnlockCounter - 1.0 UnlockSound (iOS 8 & 7) - 1.1.2-4 unrar - 3.6.8-2p unzip - 5.52-5p Vine++ - 1.3-5 Virtual Home (iOS 7) - 1.3-1 Wallmart - 2.0-1 WiFried (AWDL Disable) - 0.4 WinterBoard - 0.9.3918 YouTubed - 1.6.2-1 Zanilla - 3.0 Zeppelin - 2.1.0-12 zip - 2.32-5p