This is a box I made to hold a four AA battery holder, a switch, and a potentiometer (wired as a voltage divider), for use with my night vision tube to camera lens adapter flanges.
It has a hole that will align with one of the two lugs, and is fit to the curvature of the p807HP tube.
I've since found I like using CR2032 coin (li-ion) batteries to power it better. They have a 3v potential and that's right where these tubes like to be.
With that said, if I wanted it to have long battery life I'd go with this bulkier 4AA style power source that this box was made to house.
It also looks pretty cool. Well, I think it looks pretty cool.