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Old 04-14-2019, 08:47 PM   #1
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Brand: Thor Motor Coach
Model: CHATEAU CITATION 24SA
State: Texas
Posts: 3
THOR #15023
2009 Thor Four Winds Citation 24SA - Batteries

Thor Four Winds 24SA - Sprinter Diesel Batteries

I just purchased my RV and want to understand the how the batteries are configured and charge. I have found 1 Chassis battery and 1 deep cycle Coach battery under the hood. Does anyone additional information on how the system works and charges. Do they charge independently? Has anyone added a 2nd Coach battery. The Chassis battery seems to loose the charge pretty quickly.
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Old 04-16-2019, 02:52 AM   #2
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Brand: Thor Motor Coach
Model: Chateau 24FS
State: New Mexico
Posts: 64
THOR #12181
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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Old 04-18-2019, 07:23 PM   #3
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Brand: Thor Motor Coach
Model: CHATEAU CITATION 24SA
State: Texas
Posts: 3
THOR #15023
2009 Thor Four Winds Citation 24SA - Coach Batteries

sanjaun2 - Thanks for the reply.

Does anyone else have a 2009 Thor Four Winds Citation and know which systems run on the Coach battery vs Chassis battery?
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