Originally Posted by herk7769
Great! Glad you got your issue solved.
Harold Barre's book is not the first reference to state that routinely charging low deep discharge batteries via the TV charging system will ultimately damage the TV's 12VDC system. Your mech is quite correct that the TV's system is much better suited to keeping a fully charged camper battery "topped off" due to the TV and camper battery voltage being very close to the same potential.
The complete explanation is on pages 64-78.
i'll have to find a copy of that book!!
we dont boondock much, just the occasional walmart type stop, other nights are plugged in
i just want to ensure there is always adequete power for the breakaway if someone leaves a light on or something else. i also assume the propane fridge uses a small amount of 12 volt power
a backup light is next, i can think of several times i needed one last year, we do our long distance travel at night. i have installed them on work type cubevans in the past, very useful even with a spotter