The latest installment of iOS comes with a new feature that can help to extend the battery life of your iPhone or iPad for couple more hours. Here's how to enable the Low Power Mode on your Apple device.
Extend iPhone Battery Life
Go to Settings > Battery and toggle Low Power Mode on. The battery status icon turns yellow indicating that Low Power Mode is enabled.
This feature will automatically reduce the your phone's CPU and GPU performance, screen brightness, animations and motion gestures, as well as background updates when your phone is low on battery.