One of the benefits of the customizations that various device makers do to Android is more controls to lengthen the battery life. However, this comes with its own fair share of shortcomings.
Despite having some very good battery life to superior battery management tools and Doze 2.0 which devices running Nougat benefit from, Huawei's Mate 9 is a mess of terribly annoying persistent system notifications that pop up every now and then informing users of apps that consuming their fair share of the juice.
If you're like me then your patience will run out really fast and you will simply tire of the constant nagging. There's a way to disable the annoying battery notifications in 4 easy steps.
Open the Settings app
Click on the Battery tab
Click the gear icon
Toggle off "Power-intensive prompt"