What If You Used iOS 9's Low Power Mode all the Time?
 

I am amazed by the impact Low Power Mode has on battery life. It’s not like the extreme low power modes found on Android phones that basically turn everything off and turn your $600+ phone into a dumb phone. It turns some things off, yes, but nothing that really changes how you use your phone. Sure, your screen is a little dimmer, the CPU is cranked down a bit, and your apps don’t update as regularly in the background, but I didn’t mind these things at all. It still felt like an iPhone, and I was just as able to get work done quickly in this mode.

http://www.birchtree.me/blog/wqoc7tw...bwkvjikqju8tz7