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Old 01-28-2017, 08:46 AM   #1
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LP/CO gas Alarm going off due to low voltage?

My Gas alarm continues to go off every 2-3 days seemingly due to low voltage from my D.C. Batteries. I have a 2011 Thor Astoria Coach. I just replaced the alarm in August 2016. When alarm goes off, I have to turn engine on for 15-30 minutes until battery voltage is recharged to above 12 volts, then alarms goes off. Right now I thinking either I have bad batteries or my ME inverter/charger is going out? Good news is the batteries are under warranty for a few more months, should I replace them?
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Old 01-28-2017, 11:08 AM   #2
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Welcome to iRV2.
First post I see.

EDIT: You didn't say if your coach is plugged in when this is happening, so I assumed it wasn't.

When your batteries are low enough to set of a low volts alarm , it would take 8 to 10 hours of driving on the highway for the engine alternator to fully recharge them. So seeing them above 12 volts after a half hour is only a surface charge, and the reason they are low again in days.
JMHO; Remove the batteries from the coach and charge them for 48 hours, let them sit for 12 hours after charging and have them load tested. That's the best way to check for a bad battery.
If they test ok , then put them back in the coach , but don't re-connect them till you're ready to use the RV.

More info on batteries and charging on this site

www.marxrv.com/12volt/12volt.htm
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