Basically the idea is that Facebook, Weather apps, Antivirus and Cleaning apps are eating a lot of battery with Facebook being one of the worst offenders.
The article also gives tips how to still enjoy what these apps brings to the table without the expenditure of battery life...
Go here to read it:
http://neurogadget.com/2016/01/12/4-android-apps-need-uninstall-smartphone-right-now/22183