Mine is 12.6 In the with arb refrigerator hooked up, I suspect you have some drain going on.I might agree but after going to the dealer, I did take my JL to an auto parts store near my house.
The counter guy came out to my Jeep, hooked up a battery tester and had me crank the engine with the battery jumper attached. The voltage on starting was 123 and this cranking voltage should be 700 or so. Simple test...bad main battery. Not three hours.
This morning the ESS system is working and I did nothing but change the main battery. No trickle charge.
I will be looking into the Genesis system also. Thanks