Samsung's Galaxy Note 4 users love the array of features that the device comes with. However, all of that multitasking can sure take a toll on the device's battery life. The Note 4 deals with this issue by allowing users to switch into its Fast Charging mode, which charges the device up to 50% in 30 minutes.
This tutorial will walk you through how to turn on the Samsung Galaxy Note 4's Fast Charging mode.
Turn On Samsung Galaxy 4's Fast Charging Mode
Go to Settings > General > Battery.
Check the box that corresponds to Fast charging.