Basic resource management goes a long way, and since your display is almost certainly the biggest battery hog no matter what device you're using, lowering its power intake will improve battery life across the board. (androidauthority.com)
The Facebook app is one of the worst battery hogs on the iPhone. (knowtechie.com)
Because universal apps are designed to run on mobile devices, my Surface Pro 3 consistently gets several hours more battery life with Edge than with Chrome (though that's a notorious battery hog). (thenextweb.com)