I just got a new stand and fill feeder from OA yesterday and it is by far my favorite - and I've tried a few.
This is the model I picked up, but they have other versions.
The battery and timer are inside the main body in the void space on the outside of the funnel that is built into the main body of the unit. A little side door gives you quick access to the controls. No exposed wires and the large plate under the spinner keeps any animals from getting to the spin plate. Holds 650 lbs.
I just learned about these and I was super pleased to get mine. Now I gotta get to work and fill it up!
PS - They are made in Texas, so if you wanna support a local business that makes great products, check em out: www.OAHunting.com
(They also do some cool custom metal sign and fabrication work)