I'm using DP and I have the latest update which was days ago, I'm also on cyan. Before the update, the battery performed well (or at least as expected). Now, it drains too quickly when play a bit of minion rush or watch some youtube videos. The other day out just dropped to 5 percent in a couple of minutes. I did a hard reset but still, the battery ducks now. I'm thinking going back to cyan but I love the folders features, it saves me lots of space and get me organised. I need some help (oh, I don't have too many apps running in the background, just few essentials)