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Old 01-25-2016, 12:13 AM   #1
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Another Question on charging RV battery

I plan to charge my TT battery with an external battery charger. If the battery disconnect is off, can i charge the battery via a 12 amp charger powered by a portable generator without disconnect the battery from the TT?

I'd like to have the generator running and connected to the 30 amp supplying power to the trailer and at the same time having a 15 amp battery charger, charging the batteries.

I know there's a debat as to whether the converter charger will charge batteries as quickly as a car battery charger like a Schmacher or equivalent. From my testing, it looks like using the onboard charger is not adequate. But I don't want to rehash that, just would like your opinion on charging the battery while connected to the TT. I don't see a problem but I don't see a lot of things. Seems it would be equivalent to charging a car battery without disconnecting it from the car? Sorry for being so long winded. You guys have been very helpful.
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Old 01-25-2016, 12:54 AM   #2
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I leave mine hooked up while charging, haven't had any issues
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Old 01-25-2016, 01:30 AM   #3
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Thanks, I'll try that.
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Old 01-25-2016, 05:57 AM   #4
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I leave mine hooked up while charging, haven't had any issues
I just topped mine off I didn't disconnect mine either and it worked fine. My Charger/ Convertor is still working like it should in the unit. No damage that I know of. You get half of one way half of another. I even asked my neighbor who has a windjammer and he said that is also how he does his when needing to be topped off.
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Old 01-25-2016, 06:26 AM   #5
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I just topped mine off I didn't disconnect mine either and it worked fine. My Charger/ Convertor is still working like it should in the unit. No damage that I know of. You get half of one way half of another. I even asked my neighbor who has a windjammer and he said that is also how he does his when needing to be topped off.
Glenn was this talk performed at the Local Tiki-Hut? With ALL that SUN in Fla.why are you Not on Solar? Youroo!!
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Old 01-25-2016, 07:12 AM   #6
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i've kept my Rockwood Roo HTT plugged into shore power and NEVER had any issues with the WFCO converter keeping the two batteries charged.

nor when i am dry camping and using my Honda 2000i genny to recharge them, using the onboard converter.

and that been for 10 years now.
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Old 01-25-2016, 07:23 AM   #7
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i've kept my Rockwood Roo HTT plugged into shore power and NEVER had any issues with the WFCO converter keeping the two batteries charged.

nor when i am dry camping and using my Honda 2000i genny to recharge them, using the onboard converter.

and that been for 10 years now.
X2! Youroo!!
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Old 01-25-2016, 07:49 AM   #8
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Glenn was this talk performed at the Local Tiki-Hut? With ALL that SUN in Fla.why are you Not on Solar? Youroo!!
We meet at 5:00 PM for tech talk. No sun here for 2 days. Rain and cold for Florida maybe 70 and 50 at night. But they tell me it will get back to norm today. All extra monies go to the local economy (TIKI-HUT) and BINGO.
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Old 01-25-2016, 11:07 AM   #9
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i've kept my Rockwood Roo HTT plugged into shore power and NEVER had any issues with the WFCO converter keeping the two batteries charged.

nor when i am dry camping and using my Honda 2000i genny to recharge them, using the onboard converter.

and that been for 10 years now.
About how long do you run your generator to charge them? thanks.
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Old 01-25-2016, 03:31 PM   #10
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About how long do you run your generator to charge them? thanks.
Depends on how far they are down and if I've used the furnace.

Generally 2-3 hours every 3-4 days, IF I'm not using the furnace.
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