I have a new Thunderbolt 386x12 that every time I put it in storage for even a week, it will draw the battery down to where it will not have enough power to raise the gear. I always turn off the disco...
Buy a disconnect and mount it at the battery or disconnect one of the cables while in storage. Anytime my trailer sits for more than a week I try to disconnect the battery to prevent my CO2/LP alarm from killing the battery. If you take this route make sure you connect it back up prior to towing as this usually provides power for your brakes in a break away situation.