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Old 03-12-2013, 09:58 PM   #81
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How is having my combiner engaged to a single charger, any different than a combiner relay?

The question I would have is can the condition of one of the batteries connected via a combiner to a charger override the condition of the other batteries connected to the combiner in such a way that could adversely affect the other batteries?

In other words, would the charger respond to the condition of Battery A which might have some issue that causes it to demand a continuous high rate of charge which would then cause the charger via the combiner to apply that same continuous high rate of charge to Batteries B and C which didn't need a high rate of charge, thus cooking the hell out of Batteries B and C?

I don't pretend to have even an inkling of the answer. It's just the question that occurs to me when I hear about one multi-stage charger charging multiple batteries or battery banks that could be in different states of charge or condition.
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Old 03-13-2013, 07:09 AM   #82
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Without reading the Duo Charge manual..because I don't have one and I'm not in a free internet zone right now to download one...

If the IOTA charger is just connected to the house bank...is it possible it will NEVER charge the start battey? Maybe the Duo Charge ONLY combines when the alternator is working through some "sense" and it's NOT just a voltage/amp read.

It does seem finicky as my last post from the manual stated.... that it had limitations depending on amp draw so I woud be looking there if I knew my battery banks were OK.
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Old 03-13-2013, 08:24 AM   #83
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Ten months.



How is having my combiner engaged to a single charger, any different than a combiner relay?
Because the way you described it, you have them combined full time now, giving you essentially two different battery types on the same bank, and each started out with a different level of discharge.
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Old 03-17-2013, 01:44 PM   #84
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*FOLLOW-UP*

I found the issue. The 30A fuse between the Digital Duo Charger and the starter battery was popped. Probably pilot error on my part. Once I read the FULL instructions (thanks to posted that as I only have a abbreviated version), I was able to read the light flashing sequences and track down the problem. It seems to be performing correctly now and I am reading 13.6 VDC to the start battery now. Even while in float mode of the main charger.
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Old 03-17-2013, 01:55 PM   #85
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*FOLLOW-UP*

....... Once I read the FULL instructions ......
Funny how that works.
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Old 03-17-2013, 01:59 PM   #86
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You're welcome.
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Old 03-17-2013, 04:17 PM   #87
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Funny how that works.
Hey... Gimmie a break. There were pages missing from mine that I didn't know existed.

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