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Old 05-20-2022, 10:29 AM   #15
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Correct, assuming you have a fairly new coach with modern power management. You don't even need to turn the 12v switch off. My coach will run everything except the ACs and floor heat on a 15 amp. It will even run one of the ACs on 20 amp. All you need is a 50 to 20 amp dog bone.

You never stated what year make and model coach you have. That might help get a better answer.
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RV Manufacturer
Tiffin
RV Model
Allegro 32ba
RV Year
2007
RV Length
32

Some RV house charging systems will also maintain chassis battery. Some will not. Measure battery terminal voltage to find out.
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Old 05-20-2022, 11:55 AM   #16
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2007 tiffin allegro 32ba/w22 workhorse chassis
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Old 05-20-2022, 12:02 PM   #17
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I will check the voltage at the outlet the inverter is plugged into first. Then go from there. I just spent $350 for new coach batteries. I want to make sure they don't loose to much charge. Thanks for all the advice and tips on here.
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Old 05-20-2022, 12:06 PM   #18
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We ASSUME you have an inverter/CHARGER.


What make and model is it so we can confirm. Also, larger models have a power share/power save feature so that you can limit the amps of 120 VAC used to charge batteries. The 5 amp setting is plenty adequate, and will allow you to use some other limited 120 VAC items without tripping the 15 amp shore power breaker.
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Old 05-20-2022, 12:17 PM   #19
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Old 05-20-2022, 12:42 PM   #20
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Well, it's not an inverter but it is a converter/charger and that's all you need. The 9260 is a smart, 3-stage charger that will keep your house batteries up to snuff and only uses a few amps from shore power to do that. Just don't turn on any other big amp loads, e.g. fridge, water heater or a/c.


I don't think your Tiffin charges the chassis battery from shore power, though. You might want a maintainer charger for that.
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Old 05-20-2022, 01:43 PM   #21
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[*]If you should lose power to the house outlet, the inverter will start to drain the battery bank by trying to convert 12 volt battery power into 120 volt power.
This is why I recommend the iScoket: https://www.isocket.us/

Be safe

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Old 05-20-2022, 02:44 PM   #22
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This is why I recommend the iScoket: https://www.isocket.us/

Be safe

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Interesting! Thanks
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Old 05-20-2022, 07:13 PM   #23
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So i checked my voltage across my coach batteries with converter/charger plugged in and i got 13.71 volts. When i unplugged converter it dropped to 13.45 with a slow drop to around 13.29. I took off after about a minute.
So looks like my converter/charger is working fine.
Thanks again for all the tips/advice..
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Old 05-20-2022, 10:53 PM   #24
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My inverter at least , has a charge only function. So if I was to loose power it wouldn't be inverting using power from batts. Even in stand by UPS mode it still has some draw.
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So i checked my voltage across my coach batteries with converter/charger plugged in and i got 13.71 volts. When i unplugged converter it dropped to 13.45 with a slow drop to around 13.29. I took off after about a minute.
So looks like my converter/charger is working fine.
Thanks again for all the tips/advice..
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