I have Marshmallow update, but can't say for sure if that is the reason or not because I've only had the phone for a week now.
BUT ... I'm using the Sony DK52 and twice now in three days ... I dock the phone with 50-60% charge when I go to bed and then in the morning the phone will be powered off.
Last night I even made sure after docking that it was ON and showing charging. This morning it was OFF and stuck at 81% charge status.
I'll monitor this closely, try USB cable direct and a few other things and report back, but wanted to post in case anyone else has observed similar behavior.
Bob H
Minneapolis, MN
