Gotta love Amazon.
Has your battery life improved since the Marshmallow update?
They're awesome!
At first I didn't see anything, but since I had other issues (Google wasn't syncing at all) I did a factory reset and now it seems like I'm getting better battery life, especially with doze. My phone was off the charger since 3AM and at 7:30 I was only down to 96% battery!!