What battery are you using in your trunk also push pull turn off.

Trying to get to my ideas.
What battery are you using in your trunk?
I am not running a metal Divider into the interior. Do I have to run a dry cell? If so what one do you recommend?
How are you running your push pull shut off switch?
Thanks for the help
Orielly's AGM SuperStart in a plastic battery box with 20 gal fuel cell in trunk and Batt cut off is a turn switch style that uses the fuel fill cap as the switch.