Shore power charging

[Thinkingrequired]

Our 2012 Eagle's battery works fine when the camper is on the truck, but when we separate the camper and put it in the carport for storage the battery dies even though its hooked up to shore power. Can anyone tell me how to fix this problem.
Thanks

 

[dennis 221]

Is your little silver plug pulled out? Needs to be with shore power

 

[fish more]

My Hawk has a red power knob

 

[Stan@FourWheel]

Maybe watch this ?