Good Sam Club Open Roads Forum: Tech Issues: House/chassis battery issue
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 > House/chassis battery issue

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ramsaymike

Bobcaygeon ON

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Posted: 08/17/20 05:40pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2007 Coachmen Concord DS275 and discovered that the only way to charge the chassis batteries is by the alternator. Shore power charges house batteries only. This is a real issue for me as the engine cracking speed is critical in starting the 6L Ford diesel. I also have a solar system but it too is house only. I would like to be able to use the solar charging as needed to keep the chassis batteries fully charged. The battery interconnect solenoid would seem to be what I need to use but when I activate it (apply 12v) the headlights turn on which greatly reduces the charging efficiency. Any ideas appreciated.


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Dusty R

Charlotte Michigan 48813

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Posted: 08/17/20 06:11pm Link  |  Quote  |  Print  |  Notify Moderator

Check out a Trik-L-Start.

Dusty

BFL13

Victoria, BC

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Posted: 08/17/20 06:20pm Link  |  Quote  |  Print  |  Notify Moderator

Very common problem. You can charge/maintain the engine batt with its own little charger or parallel the engine batt with the house batts to charge/maintain them all with the converter.

I use a 2a charger that stays at 13.4 volts forever when it is plugged in. It came with two sets of wires. One with clamps and one with a 12v plug. I use it inside the Class C by plugging the charger's 120v plug into a receptacle and plug the 12v into the dash cig lighter socket. That keeps the engine batt at 13.4v.

There are lots of other ways to get it done.


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ramsaymike

Bobcaygeon ON

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Posted: 08/17/20 06:29pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the ideas. I like the look of the Trik-L-Start. I should be able to simply install it across the interconnect solenoid - I think. Sounds ideal to me as I will always have active solar charging every day and can just let it keep the starting batteries charged.

BFL13

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Posted: 08/17/20 06:38pm Link  |  Quote  |  Print  |  Notify Moderator

ISTR reading on here that there is a trick to the trickle start?

It only works when one set of batts is higher voltage or some such? So there could be a scenario it doesn't do what you want? I completely forget what that was about - except it worried me so I don't have one. Maybe a false alarm here, don't know.

Somebody will know whatever that was about----
EDIT--

Engine batt must be 1/2 volt lower than house to let any current flow from house. Says here battery disconnect must be "on" (meaning "closed"? who knows??? )

https://winnebagoind.com/resources/service/pdfs/2006-04%20Trik-L-Start.pdf

* This post was edited 08/17/20 07:14pm by BFL13 *

Bobbo

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Posted: 08/17/20 07:17pm Link  |  Quote  |  Print  |  Notify Moderator

I put a Trik-L-Start on my 2007 Class C (when I had one). Problem solved.

BFL13 wrote:

ISTR reading on here that there is a trick to the trickle start?

It only works when one set of batts is higher voltage or some such?

When the RV is plugged in to shore power, the converter/charger will be putting out AT LEAST 13.2v. Again, problem solved. (And, the Trik-L-Start only lets power flow one direction. Set to charge the chassis battery, it won't pull power FROM the chassis battery.)

BFL13 wrote:

Says here battery disconnect must be "on" (meaning "closed"? who knows???

That means the house battery must be charging from the converter/charger.


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RJsfishin

Winston Or.

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Posted: 08/17/20 10:57pm Link  |  Quote  |  Print  |  Notify Moderator

just connect the positives together thru a toggle switch on the dash gives me manual control for charging either direction, and from either source


Rich

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ramsaymike

Bobcaygeon ON

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Posted: 08/18/20 04:35am Link  |  Quote  |  Print  |  Notify Moderator

Anyone know of a source for the Trik-L-Start in Canada???

lane hog

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Posted: 08/18/20 05:36am Link  |  Quote  |  Print  |  Notify Moderator

On our Winnebago, I ran a positive wire from the house battery compartment to the engine compartment... Only connected it when in storage so it could benefit from the solar panel.

The proper way would have been to put diodes in-line to prevent pulling the coach batteries down to whatever the starter battery was at... we scrapped the Winnebago before I got around to that.



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ramsaymike

Bobcaygeon ON

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Posted: 08/18/20 07:10am Link  |  Quote  |  Print  |  Notify Moderator

This is essentially what I had in mind by using the battery interconnect solenoid. I think the Trik-L-Start looks like a good install and forget solution....

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