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Old 15-12-2013, 12:55   #1
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Battery charging relay switch

I suffer 0.7-volt battery drop while charging through a battery-isolation diode on a new-to-me Tayana 37, which makes charging a nightmare.

In the 1996 edition of BMEM, Nigel Calder discusses replacing such a diode with a charging relay to overcome the battery drop. It appears to be an uncomplicated solution.

Can anyone recommend a brand/model of charging relay that is reliable?

Much appreciated.
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Old 15-12-2013, 13:09   #2
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Re: Battery charging relay switch

Google Automatic Charging Relay and you will find a few. Blue Sea make a good one that can be auto or manual.
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Old 15-12-2013, 13:41   #3
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Re: Battery charging relay switch

Yandina Ltd, a small business, makes combiners, galvanic isolators and other marine electronics stuff. I have been reading (and following) Yandina's diy project articles for years.

Their 100 amp combiner is available for $65 direct or $140 for a 160 amp unit.

David
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Old 15-12-2013, 13:53   #4
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Re: Battery charging relay switch

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Originally Posted by foojin View Post
Can anyone recommend a brand/model of charging relay that is reliable?

Much appreciated.
I've had good service from the Victron Cyrix.
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Old 15-12-2013, 23:45   #5
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Re: Battery charging relay switch

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Originally Posted by djmarchand View Post
Yandina Ltd, a small business, makes combiners, galvanic isolators and other marine electronics stuff. I have been reading (and following) Yandina's diy project articles for years.
David, looks too good to be true. Unlimited warranty? The price is right.

Thanks to all for the replies. Will follow all up.
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Old 16-12-2013, 00:24   #6
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Re: Battery charging relay switch

Quote:
Originally Posted by djmarchand View Post
Yandina Ltd, a small business, makes combiners, galvanic isolators and other marine electronics stuff. I have been reading (and following) Yandina's diy project articles for years.

Their 100 amp combiner is available for $65 direct or $140 for a 160 amp unit.

David
I'll second that! I have a 50 amp and a 100 amp which work perfectly.
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Old 16-12-2013, 06:32   #7
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Re: Battery charging relay switch

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Originally Posted by foojin View Post
David, looks too good to be true. Unlimited warranty? The price is right.
Yes, unlimited warranty. We were struck by lightning which, among many other things, took out both our 12yr old West Marine brand Yandina combiners. Even though these were not bought from Yandina and were not even Yandina brand (Yandina provided OEM to WM for a time), Yandina offered free replacement with new - no questions asked.

By far, Yandina is the best support in the marine industry. Name me another company that would give you free replacements for a product that took a direct lightning strike!

Mark
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Old 16-12-2013, 13:03   #8
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Re: Battery charging relay switch

Quote:
Originally Posted by djmarchand View Post
Yandina Ltd, a small business, makes combiners, galvanic isolators and other marine electronics stuff. I have been reading (and following) Yandina's diy project articles for years.

Their 100 amp combiner is available for $65 direct or $140 for a 160 amp unit.

David
Thanks for the reminder! I've been there before, but forgot what a great resource, like his tips page!
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