I installed a battery disconnect switch that disconnects Everything except the landing gear. I can hitch and unhitch it without having to connect the battery.
Prior to that I simply pulled the Negative battery cable from the battery....when I did that, Nothing was a drain on the system.
I still have my battery connected with a stainless hex nut on the Pos post and a wing nut on the Neg post for easy disconnect.
2012 Wildcat Sterling 32RL, Gladiator Qr35 ST235/85R16 Load rating G, TST 507 TPMS w/ Flow-thru Sensors & Repeater, Reese Sidewinder 16K Pin Box, PI EMS HW50C
2008 Chevy Silverado 2500HD CCSB LTZ Diesel, Fumoto Oil Drain Valve, Turbo Brake activated, 39 gal Aux Tank W/ Fuel Pump transfer, Air Lift Loadlifter 5000 air bags.