My Yureka battery is back to it's old tricks. Battery lasts hardly for 12 hours with average use.
Use greenify, disable apps not useful..
Lazy to root, want to root quickly, try KingRoot (no data loss etc etc). Install it on device, tap on root. Uninstall root within app.
After rooting you can try greenify (for battery backup), titanium backup (for backup and removing system apps etc etc), lucky patcher (google it), network firewall, hotspot shield (VPN), busybox
Kingroot install purity app (app from same manufacturer), you can try that instead greenify (if you did not like greenify), or uninstall purity and disable it from kingroot.
Other than kingroot, there are many single tap rooting but this works best.
But best way is to root with SuperSU and custom recovery (check XDA Developers).
Custom recovery allows you to flash zip files of custom rom, custom kernel, modified system files etc etc
Then you can try "xposed" app if you don't want to install custom rom, and want custom rom features.
There are many apps useful if you root device.
As per xda (all below)
Advantages of rooting
-De-bloat your*phone. Uninstall any unwanted system apps.
-More control over how the CPU acts. This can increase performance or battery life, depends on how you configure it.
-More control over power consumption. This implies undervolting your CPU, giving it less power, so it consumes less.
-More control over how apps start up. Prevent apps from starting up when they don't need to.
-Change your Baseband (Radio). Try different radio versions, with the purpose of reducing battery drain or improving your signal strength.*
-Flash custom ROMs. Bored of the stock ROM and look? Browse through the hundreds of custom ROMs provided by this community, each having different features and looks.
-Backups. The ability to completely backup your*phone, and fully restoring it to the time of the backup. This is done with a Nandroid Backup (we'll talk about this later)
-Mods and Inovations. Use many mods, fixes, tweaks or features created by the community!
-Custom Kernels. As a*Nexus*device, the*Nexus*5 will have tons of kernels with different features, supporting better performance, or battery life! To see what a kernel is, keep reading.
-Run apps that need Root Permission. These apps can be very useful, like Titanium Backup, Root Explorer, Terminal Emulator and many others!
Disadvantages of rooting
-Rooting will void your warranty (Although reverting root is very easy)
-The process a bit dangerous. Something could (99.9% probably not, but still) go wrong, and end up bricking your*phone. So, yes, the process is 0.1% risky. You can end up deleting everything on your*phone. You'll have to handle this process gently and with care.
-You will be able to do a lot more mistakes. These may cause damage to your*phone*(But hey, that's why we have these kind of threads, eh?)
-No more over the air official updates. You'll have to update your*phone*manually, through your recovery. (Which isn't that hard)