GuitarPhotog wrote:lrrowe wrote:I might be a little confused on this one. If you do not have anything on the trailer draining or drawing power, then why bother with unplugging, that is if you are not removing the trailer from the TV.
If all your trailer lights (call them off grid lights i.e., reading lights, pumps, USB usage and so forth)'are drawing 12v from the TD/CT's house batteries, then again, there is no drain on the TV's battery.
If the two batteries are connected in parallel (the usual method), you will discharge BOTH batteries simultaneously. Just because one is closer to the load doesn't cause the trailer battery to be used preferentially.
<Chas>
I wasn't thinking the batteries were connected. Just two different systems.