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Old 12-28-2010, 08:17 AM   #1
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Question on the converter charging the batteries

Good morning ! My question is this. On our 2004 Winnebago Adventurer.

Are the house batteries still being charged when the coach is plugged in and the battery disconnect switch is to off ?

I think it is because the on the panel that shows the battery voltage it reads 14.1

Is there a way to disconnect the charge wire firm the converter to the batteries?

Reason for all this is I received a BatteryMINDer 12248 for Christmas and want to use that (not the converter) for maintaining my house batteries.

Should I just leave the coach unplugged from shore power and power the maintainer form a separate 120 ?
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Old 12-28-2010, 09:27 AM   #2
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I'd use a separate power cord for the Minder and leave the converter alone. You want it to be the main charger when not in storage.
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Old 12-28-2010, 07:16 PM   #3
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Converter battery chargers have come a long ways in just the last few years. Click here to see 4 stage converter chargers. Even the converter fan has an auto nite setting for low noise levels. I'm glad my old one broke.
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Old 12-30-2010, 05:27 PM   #4
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Question? have any of you installed a switch (or disconnect) from the converter to the batteries?

The reason I ask is because I installed my BatteryMINDer this week and have been charging the engine battery (this battery has a disconnect on the negative side of the battery).
I also purchased a additional leads for the house batteries.
I want to keep the coach plugged in so I can have the 120 volt outlets hot at all times. The I can charge the batteries and run a electric heater if needed.

I guess I could also put disconnects on the house batteries also.

Comments ? Suggestions ?

Thanks !
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Old 12-31-2010, 02:24 PM   #5
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Hi Bug512,
Battery Minders are usually used when the coach can not be plugged into shore power or the owner does not want the coach connected to shore power or the charger is not intelligent enough to run the batteries through different voltages as needed.

Because you want your coach connected to shore power, connect the Minder to the chassis batteries using a separate cord or a 120 VAC outlet from the coach. Leave the coach batteries alone. This will ensure your post 4 requirements are fulfilled.

Leave the disconnect switches in the position they would be in when the coach is in use.
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Old 01-01-2011, 07:57 AM   #6
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assuming your battery system is wired like mine, when the house battery switch is off, it is just like disconnecting the positive lead from the battery. nothing gets in or out.
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Old 01-01-2011, 08:07 AM   #7
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I have a 2008 Winnebago. I'm sure it is different than a 2004 so my first thought is to call Winnebago with your VIN and Serial Number handy. Ask them the specific question.

With that said, my MH came with the Trik-L-Charger. I'm not to sure that it does as great a job as the Batter Minder (I have one of those also). In order for my converter to charge both of my sets of batteries, the disconnect for each has to be turned "on." Also, the step has to be turned off. In my case, since I don't like leaving the step out, (and with a side entry) I close the screen door and the step retracts, then I reach in with a long object and turn the step off. According to the Winnebago technician that I spoke with the step being turned on will have a constant draw of amperage. (You'll have to ask them why.)

Good luck.
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Old 01-01-2011, 06:38 PM   #8
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Thanks again. For now I disconnected the negative cable from the batteries.
I will need to do some more investigative work and will then post my results.
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Old 01-02-2011, 03:41 PM   #9
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Well here is what I found.

With the coach plugged in to shore power and the battery disconnect to off the batteries are isolated like the above posters stated.

I mounted the BatteryMINDer in the compartment next to the entrance. The rechargeable vacuum and flashlight did not work any more so out they went.
Now I can alternately charge the house batteries and the chassis battery conveniently.

Thanks again for the information. Much easier then planned.


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