Battery & cut off switch

[Whiskey_River]

My battery goes dead after about 7-10 days being not plugged in.
Its a 5th wheel & I turn the cut off switch to off but it still goes dead.
What all is still active or still powered to the battery with the switch in the off position. Lights don't work, awning does not extend etc. But something is still being powered or there is a short in a line somewhere. For now I just disconnect the negative terminal of the battery..

[mr_andyj]

SO, disconnecting the neg cable does the trick?
If not then maybe the battery is so near the end of its life that a week is all it takes for its last remaining amount of power to naturally drain out.
Batts lose power always when sitting. A god battery will not matter if it loses a little, but a near-dead one will.

If it is still draining this fast and is not an old battery then there is more than a CO monitor pulling down power. A short might do it. It could be anything, even a solar panel that lacks a proper diode.

Is there a fantastic fan that comes on when it gets hot that you are not aware of, or something like this that might be off when you are in it closing up, but then comes on when you are away?

[pianotuna]

Ad a modest solar charging system.

[CA_Traveler]

My switch.

[BarneyS]

Probably the propane/CO detector. Generally, they are wired in so the battery disconnect does not affect them. Also, the radio most likely always has a slight battery discharge going to it.

Most rigs will last a bit over a week without some type of battery charge. Best to do as you did - disconnect one of the wires from the battery or put a switch between the wire and the battery.
Barney