Service battery charging issue

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 370 / 375
Forum Description: 370 / 375 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=15290
Printed Date: 27 March 2026 at 03:42
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Topic: Service battery charging issue

Posted By: Big Al
Subject: Service battery charging issue
Date Posted: 08 August 2025 at 16:51

I am seeking advice regarding issue I am having regarding charging my service battery bank. When I start engine and leave in neutral I can see that my service batteries are receiving charge. However when I am under way on motor no charge is going to my service batteries. Starter motor is less than a year old and Service batteries are only 2 years old. Any advice would be much appreciated

Regards

Alan

2009 Hanse 370E

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"Vohirana" Hanse 370E Hull Number 55

Replies:

Posted By: marsella
Date Posted: 08 August 2025 at 19:24

There maybe a problem with your battery combiner, it works to combine engine and service batteries if the voltage at alternator side exceeds a certain value, such as 13.2V or around it depending on the model. You can check if the combiner is open or close when you say service bats are not receiving the charge.

Posted By: Big Al
Date Posted: 09 August 2025 at 05:49

Thanks for that Marcella.

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"Vohirana" Hanse 370E Hull Number 55

Posted By: Borjebus
Date Posted: 09 August 2025 at 12:17

Make and Avanced Search, Any date, for"

Alternator not charging house battery", and you will probably have the answer.

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BÄSK, Hanse 370e #82 from 2006, Yanmar 3JH4E/SD50, 3-blade Flexofold, RMC(Lewmar) 185 Bowthruster, Vulcan 9, Simrad+B&G instruments