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Yandina battery combiner question.

Old 05-05-2008, 10:35 AM
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Default Yandina battery combiner question.

I installed my combiner 100 a few days ago.

Last night I was on my boat with all my lights and electronics on using #1 house battery. This is connected by two Yandina combiners to another house battery and a starter battery. Nothing was charging the batteries and yet the combiner on the house battery that I was usingand the starter battery would come on and off.

Any idea what would cause this? Should I worry about it draing all my batteries? I thought they were only supposed to come on when being charged?

TIA



Joe
Old 05-05-2008, 05:39 PM
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Default Re: Yandina battery combiner question.

You should call Yandina and speak with them if you have any concerns. My setup used to do the same thing but didn't cause the batteries to drain.

The guy at Yandina is very knowledgeable and great to deal with. I'd speak with him first.

Old 05-05-2008, 06:04 PM
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Default Re: Yandina battery combiner question.

ESSRTEE8 - 5/5/2008 8:39 PM

You should call Yandina and speak with them if you have any concerns. My setup used to do the same thing but didn't cause the batteries to drain.

The guy at Yandina is very knowledgeable and great to deal with. I'd speak with him first.
I agree. This isn't a big corporation that doesn't care about their customers. They do.
Old 05-06-2008, 06:29 AM
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Default Re: Yandina battery combiner question.

The most likely explanation is as follows.

The Combiners detect that there is a charging source by measuring the voltage. When it gets above about 13.1 it is higher than a fully charged battery that is not actually on charge so the combiner turns on. However batteries that have recently been on charge (as high as 14.2 in the bulk stage) but no longer on charge will have an artificially high voltage. This phantom voltage is more prevalent in AGM batteries but it doesn't represent any additional "power" and it will drop very rapidly to a normal working voltage as soon as a load is supplied.

So after charging finishes, if there is no load to dissipate this phantom voltage, the combiner can stay on for quite some time. It can vary from a few minutes to as much as an hour with larger batteries in good condition.

When you applied your load to one battery, since the combiner(s) would probably have been closed, the load would rapidly drop the voltage on all batteries because all would be supplying some current to the load. Within probably 30 seconds that voltage would get below 13.1 and the combiner(s) would turn off. This leave the load on the intended battery and disconnects the batteries with no load. Although the voltage on the battery in use will have dropped to about 12.8 (assuming it too was fully charged) the voltage on the idle battery(ies) can still be above 13.1 so that side of the Combiner(s) will still think charging is in progress. After a time delay they will close to share that charge with the other battery but that immediately drops the voltage below 13.1 and about 20 seconds later the Combiner(s) will turn off again.

This cycling will continue until the phantom charge is removed for the idle batteries.

So everything is normal and what you are seeing is just a temporary situation.
Old 05-06-2008, 08:49 AM
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Default Re: Yandina battery combiner question.

See I told you the guy at Yandina was great to deal with!!!

I highly recommend them to my friends.

Old 05-06-2008, 07:41 PM
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Default RE: Yandina battery combiner question.

Thanks all.

I thought that was what was happening. I just wanted to make sure.

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