I have a Fairphone 2. And I am experiencing something estrange with the Maps app.
I have the location deactivated, and google location services and history location as well. The google maps app is closed. (but not stopped since it insist in restart automatically in the background without asking)
After 1 day I can see that Maps appears in the first place of battery use list. with a mark of 22% (without opening it, and with location deactivated)
It seems that the app is consuming battery just trying to check if it can locate you.
I think that this is a problem related to Android more than Fairphone, but I would like to ask if more people is observing this behaviour. Does anyone have a solution (other than uninstall google maps?)