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Old 03-07-2012, 05:48 PM   #1
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Battery Charging

When my 2005 34 foot Alpine is hooked up to shore power only the house batterys are charged and there is no charge to the chasis batterys. Is this normal or is my coach miss wired. I would like both the chasis and house batterys to be charged while hooked up to shore power. Any advise would be appreciated. - Tom
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Old 03-07-2012, 06:06 PM   #2
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What you have is pretty much standard. If you want to charge both house and chassis batteries you need to install a device like for example Trik-L-Start.

It's extremely easy to install.

If you try and do a search in iRV2 on the word Trik-L-Start, a large number of useful treads will appear.
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Old 03-07-2012, 06:30 PM   #3
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Your 05 Alpine is suppose to charge the Chassis batteries while on shore power.They are charged after the house batteries are fully charged by activating the solenoid that ties the 2 banks together. The solenoid is activated by output 19 of the Vansco. A bad solenoid or house batteries that never get to full charge can prevent the charging of the Chassis batteries. This process works in reverse while the engine is running. The house batteries will be charged after the Chassis batteries are at full charge.


There is a long thread on this subject from a few years ago.
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Old 03-07-2012, 06:42 PM   #4
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There are several threads in the Apline owners section here concerning this matter as it relates to Alpines. Do a search for complete info, but basically, when hooked to shore power, the house batteries are charged and when they are full, a solenoid in the battery compartment connects the chassis batteries so that they will be charged too. When the engine is running, the alternator charges the chassis batteries and when they are full, the solenoid connects the house batteries so that they will be charged.

(Sorry for the repetition, Wayne beat me to it- the shortfall of my being a slow typist)
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Old 03-07-2012, 07:02 PM   #5
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Quote:
Originally Posted by The Danes Are Coming View Post
What you have is pretty much standard. If you want to charge both house and chassis batteries you need to install a device like for example Trik-L-Start.

It's extremely easy to install.

If you try and do a search in iRV2 on the word Trik-L-Start, a large number of useful treads will appear.
Seems like I gave incorrect advice - I apologize.
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Old 03-07-2012, 09:51 PM   #6
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No worries Great. We all appreciate folks who are eager to share information and help.
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Old 03-08-2012, 10:16 AM   #7
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For this post there are two types of motor homes.

Those which charge the house batteries when hooked up to shore power .. Like mine
And those which do not, Like yours.

To convert those that do not to those that do.. Google Trick-L-Start Or just click

Ultra TRIK-L-START Starting Battery Charger/Maintainer
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Old 03-08-2012, 10:41 AM   #8
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Nope--the Alpine is designed to charge both battery banks. As stated earlier, its either a battery/cell problem where the charging parameters arent being met, or the switching solenoid has failed--both are fixable vs doing an after market bandaids....Recommend you do a search on this forum, there is a wealth of info on diagnosing and correcting charging issues.
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Old 03-08-2012, 01:22 PM   #9
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Pre-Vansco coaches used the Xantrex Echo Charger.
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Old 03-08-2012, 03:18 PM   #10
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The fellow in question says he owns a 2005--have to assume its Vansco?????????
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Old 03-10-2012, 09:58 PM   #11
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My garaged 2003 36 FDDS with Echo-Charger is always plugged into 110 (fluid checked frequently). House batteries stay at 14.2 volts and chassis batteries stay at 11.9 volts. I've been told by Xantrex that 11.9 is fine, but I read charts, etc. that that might be low. Any comments?
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Old 03-10-2012, 10:12 PM   #12
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Continued charging at 14.2 volts is too much. You want it to drop to 13.2-13.5 for a "float" or "maintenance" charge. 11.9 is way too low.

Google "Multi stage battery charging" for all the info.
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Old 03-11-2012, 01:01 PM   #13
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Some Alpines had the Echo-Charger wired incorrectly so that the chassis battery did not get charged. 11.9v sounds like this is your problem, unless your batteries are shot. You need to disconnect them and use an external charger to see if that is the problem. On the Echo-Charger the red wire goes to the house battery and the striped wire goes to the starter battery.
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Old 03-11-2012, 05:32 PM   #14
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Bruce- your results are not right. either Echo isn't wired correctly or there is another problem. And ditto that the 14.2 is high and needs further investigation as to why that high voltage persists.

Tom- I did a search from the Alpine Forum homepage for "trombetta solenoid" and got Link1 and Link2 along w/a host of other threads discussing the charging solenoid link thru Vansco. You could also search on "chassis batteries charging" and various permutations like that. You'll find various diagnostics to isolate the issue.
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