Besides the propane detector and outside stereo drawing power, I have CO2 detector, 12vdc smoke detector and carbon monoxide detectors that added to the parasitic list. Sometimes I would forget and leave the antenna signal amp on. Big draw! My two original batteries were lasting 5 days and they were at or below 12vdc. I added a 5 way marine disconnect switch after I got tired of pulling fuses every time I left the unit. I would leave it on one battery at a time or shut them all off just depending on how long I planned to be away. Thus my solar revolution started......no sweat now.
2013 Silverado 2500 HD Duramax/Allison Tuned
Aviator Wright Flyer #1919
"First In, Last Out". 11B4Y
DAV, MOPH, VFW, 5/7 Cav,1/8 Cav Assoc.
11th ABN Pathfinder Co. N7MIP