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Old 09-18-2012, 11:43 AM   #1
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Battery Boost?

I have a 2006 Winnebago View J Model Diesel. I am learning as I go. I was reading in the forum about battery boost and I am wondering what I should be doing with the button on the dash which lists battery boost. Should I keep this on while driving to improve the charging of the house battery or what? thank you
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Old 09-18-2012, 12:29 PM   #2
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It should be a momentary switch just to tie the house and coach batterys together in case you need a jump to start the engine.
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Old 09-18-2012, 03:32 PM   #3
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In my case the circuit that communicates to the solenoid has failed so I manually depress the booster to keep both battery banks connected while driving. But as mentioned if everything is working you only need to use that button when boosting a dead battery.
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Old 09-18-2012, 04:57 PM   #4
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You keep your finger on the switch while you drive😱
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Old 09-19-2012, 07:54 AM   #5
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Quote:
You keep your finger on the switch while you drive��


I start the coach, give the chassis batteries some time to fully charge then I depress the boost switch and hold it open with a plastic cap. I place a business card over top of the transmission key pad as a reminder to take the cap out when parked. I have replaced that circuit 3 times and each time it has failed, taking the solenoid with it so I gave up on it.
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Old 09-19-2012, 08:04 AM   #6
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Hi and welcome to the forum.

It's my understanding that this is a momentary switch only used to connect both battery banks together and most often used to overcome a discharged battery which won't start the coach.

I also believe that most modern rigs charge both battery banks while driving so it's possible that you would never have to push the boost button.

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Old 09-24-2012, 12:31 PM   #7
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Originally Posted by Monacoach View Post
I have replaced that circuit 3 times and each time it has failed, taking the solenoid with it so I gave up on it.
Unless they've stuck some fancy junk in there it should be basically a $30 constant duty relay and some wires.

When the key is in the 'run' position a wire to the trigger terminal on the solenoid becomes 'hot' and closes the contacts making the connection between the alternator and the house batteries. Conversely the key being switched off the power to the solenoid drops, the contacts open and the house batteries are no longer connected to the starting battery.

What 'circuit' is there that keeps failing?
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Old 09-24-2012, 07:37 PM   #8
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Mine has a RV Custom Products battery control center(BCC) that senses when each battery bank needs charging and switches a solenoid on an off as needed.
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Old 09-24-2012, 09:03 PM   #9
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Quote:
Unless they've stuck some fancy junk in there it should be basically a $30 constant duty relay and some wires.

When the key is in the 'run' position a wire to the trigger terminal on the solenoid becomes 'hot' and closes the contacts making the connection between the alternator and the house batteries. Conversely the key being switched off the power to the solenoid drops, the contacts open and the house batteries are no longer connected to the starting battery.

What 'circuit' is there that keeps failing?
I can answer this one maybe. When you turn the key it does not send an instant trigger to the solenoid, there is a circuit board or bi directional relay that sends the signal only after the chassis battery gets to a pre determined voltage. So there are two items in play that can fail together or individually. If the solenoid fails then the batteries are separated permanently. If the dooo hicky that sends the signal fails, you can still by pass with the boost button......
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Old 09-24-2012, 09:22 PM   #10
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With a RV Custom BCC, there is also a timed delay before it activates or de-activates the solenoid that connects the batteries together.
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Old 09-25-2012, 08:51 AM   #11
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Thank you all for your excellent replies. As far as I know, nothing has failed. I have never used the battery boost button (have the RV for almost 18 mos.) until two weeks ago. I was just wondering what I should be using it for. I may be stupid on this but I noticed that when I switched it on, the radio, could be heard in the back of the RV. I also just noticed that my miles per gallon was drastically reduced on this trip. Any connection? Or is could there be something else going on? It has never been that bad on mpg (diesel) and I wasn't driving any differently. Thanks.
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Old 09-25-2012, 09:37 AM   #12
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No connection to mpg. All your batteries are connected while traveling anyways. Your increase in mpg could be as simple as a strong head wind.
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