I am not familiar with your coach. But, I strongly suggest buying a cheap voltmeter if you do not already own one. No motorhome should be without one. Check the voltage on the batteries. They should be different showing they are not tied together. Start the engine and let it run a few minutes. check voltages again with engine running. Chassis battery should be reading higher like 13.4 to 14.2 vdc or so. If the coach battery has risen similar to chassis battery that means it is being charged thru a relay circuit. Certain things are sometimes powered by the chassis battery like the steps and other items.This could be why your battery runs down quicker than you think it should. All coaches are different. Good luck.
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2018 Chateau 24FS
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