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Old 09-11-2007, 02:32 PM   #1
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I purchased my new 2005 Minnie Class C in April 2006. Both house batteries now indicate a dead cell in each. Can someone explain the inhouse charging system? Are the house batteries charged from the engine alternator as well as the inhouse charger powered by AC and Gen? There is a battery switch in the house. According to the manual, when ON the inhouse charger powered by AC is connected to the batteries. When OFF the connection is broken. Is this correct? I assume the batteries were a year old at the time I purhcased the rig. Comments appreciated.
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Old 09-11-2007, 02:32 PM   #2
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I purchased my new 2005 Minnie Class C in April 2006. Both house batteries now indicate a dead cell in each. Can someone explain the inhouse charging system? Are the house batteries charged from the engine alternator as well as the inhouse charger powered by AC and Gen? There is a battery switch in the house. According to the manual, when ON the inhouse charger powered by AC is connected to the batteries. When OFF the connection is broken. Is this correct? I assume the batteries were a year old at the time I purhcased the rig. Comments appreciated.
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Old 09-12-2007, 01:04 AM   #3
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RayT, welcome to iRV2.com. We are glad to have you join us here. You are correct in the understanding that the house batteries are not in the circuit for charging when the disconnect is off. Winnebago also did not supply a charging line off the altenator in a lot of these units. You could check with a volt meter with the engine running and when off; you should see a voltage rise if it is connected to altenator. There should be a date stamped into the battery case when it was manufactured. I have see brand new batteries with a bad cell. It is important to keep the cells covered with water so be sure to check them often. GOod luck and let us know what you find.
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Old 09-12-2007, 04:17 AM   #4
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RayT,
You might also find more info related to your questions and of general interest by going to the Owners section and then to the Winnebago group.

Hope the Wizard's comments help you.
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Old 09-12-2007, 06:47 AM   #5
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One question. How did you determine one cell was bad in each battery. That is very strange.

Next, when the engine is running, the alternator charges both the engine and house batteries by means of a solenoid/relay control. When on shore power, the solenoid isolates the engine battery and the converter charges only the house batteries.

I hope that helps.
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Old 09-12-2007, 09:08 AM   #6
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Dead cells were determined by using a hydrometer. The batteries are now in the possession of the Interstate rep and they will do their own testing. Thanks for the responses.
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