Coach Battery not holding charge overnight.

[Best58]

Since day one of the purchase of my 2006 BT Curiser, the coach battery will not last one night. We found a 7 year old battery in the new coach (not happy about that) and switched to a new Trojon from AC Delco.
Same issue with new battery.
With the main coach switch off, there is something drawing a charge from the coach battery.
Any suggestions on what to check for or replace???

thanks

[rdlamb]

Bob:
Many things are using current, even if they are "off".

First, though, does your coach switch work? On my coach, turning the switch off disconnects the battery completely. My switches malfunctioned, and had to be replaced.

That said, your electronics draw power even though they are off. From your TV, to the stereo, radio, anything plugged into the cigarette sockets, refrigerator, clocks and monitors (including carbon monoxide and propane).

Purchase a "Kill a Watt" and test each circuit. You will be surprised on what is drawing power, even though they are in their off position.

What type of battery is supplying your 12v power to your coach?