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Old 09-23-2021, 03:36 PM   #1
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Truck Batteries not charging when plugged in

I have a Kountry Star 3810 pusher and having battery issues. When Plugged in to shore power, the house batteries charge, but the truck batteries do not. And when running the Gen, it doesn't charge the house batteries. Anybody got any ideas ??
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Old 09-23-2021, 03:40 PM   #2
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If you press and hold the battery boost switch does the voltage go up on your truck batteries?
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Old 09-23-2021, 04:16 PM   #3
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What year RV ? Makes a difference on what kind of system does the charging.

On the shore power charging the house batteries and the generator not, thats typically not possible.

The generator powers the house just like shore power. There is a automatic switch that selects the power to the main breaker panel. The main breaker panel powers everything.
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Old 09-26-2021, 02:03 PM   #4
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Quote:
Originally Posted by twinboat View Post
What year RV ? Makes a difference on what kind of system does the charging.

On the shore power charging the house batteries and the generator not, thats typically not possible.

The generator powers the house just like shore power. There is a automatic switch that selects the power to the main breaker panel. The main breaker panel powers everything.
Ok, So what do I look for/at ??
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Old 09-27-2021, 04:18 AM   #5
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Using the wrong terminology can confuse the people that are trying to help you (like me) - are you talking about the batteries in your pickup truck? Or are you talking about the Chassis bank in your coach? You should have a House bank and a Chassis bank.
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Old 09-27-2021, 04:42 AM   #6
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Quote:
Originally Posted by Wmitch2 View Post
Ok, So what do I look for/at ??
When running from generator does everything in the house that is AC still work? Plugs, microwave, reefer, A/C? The only way the genny could fail to charge the house bank would be if one of the breakers on the genny had popped. That would, however, take out a lot more of the AC system than the converter, which charges the house (and maybe the chassis.)

Did shore power previously charge the chassis battery? If so, the post about the boost switch is a good test.
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Old 09-27-2021, 05:23 AM   #7
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A big pusher of unknown year will most likely have an inverter/charger, not a converter.

Back to the chassis batteries charging, a few pictures of the battery control center could help identifying what kind of system the rig has.

Look for big solenoids, electronic components and battery cables/wires in an outside compartment.
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