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Old 08-24-2015, 03:35 PM   #1
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Charging advice for this scenario

I have a 2016 27RLS.

I have 2 Crown Marine dual purpose 12 volt 24DP550 690 75A 105/25A batteries connected in parallel.

I have the WF-8955PEC converter with the 3 stage charge manager...apparently NOT the charging wizard in the owner's manual

I run 2 Honda e2000 companion generators with my 30amp plugged in.

I have one of those 12v battery status devices plugged in to the 12v receptacle by the TV. It shows the current voltage.

Ran both gens for 3 hours this morning (with nothing extra on in TT) on non-eco mode and the charge rate was VERY slow. In 3 hours going from showing 13.78 volts to 13.81

Am I asking too much of the generators? ideas?

Thank you in advance
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Old 08-24-2015, 03:46 PM   #2
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They are charged to the max and any good charger cuts back to maintenance (trickle) when the battery's full.
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Old 08-24-2015, 03:52 PM   #3
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Should those generators charge that battery configuration without a problem?


How long should it take?
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Old 08-24-2015, 04:14 PM   #4
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Yes the gen set will power the converter which will charge the battery(s)
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Old 08-24-2015, 04:17 PM   #5
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How long should it take? That's what I'm after. It seems like it is VERY slow to charge
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Old 08-24-2015, 04:18 PM   #6
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Sounds like they may be at full charge?
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Old 08-24-2015, 04:56 PM   #7
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Thank you everyone. I'll keep an eye on this. I'm thinking it could be a perception issue as well
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Old 08-24-2015, 05:15 PM   #8
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Check the voltage before you start the charging and meter how long till 12.5 plus (full) I suspect they are charged before the 3hrs, but you got 110 with em running.
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Old 08-25-2015, 03:43 PM   #9
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Dave you are already at a full charge any higher output and you will start to boil the batteries. Relax grab a beverage
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Old 08-26-2015, 08:39 AM   #10
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Thank you again for all the help.

The batteries do indeed get up to a full charge, but the charge does not hold through any real use. I can watch the voltage drop steadily from 12.65 down if I turn the heater on in the morning until it's out.

I am reading these batteries I have:
Crown Marine dual purpose 12 volt 24DP550 690 75A 105/25A

May not be the best choice, although one came with the TT. I bought the other to match.

Are you guys doing the 2x6V in series thing? Is this better than 2x12V in parallel? Do I even understand that correctly?
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