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Old 08-31-2015, 02:47 PM   #21
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If you need hot water quickly when you get to the campgrounds you can use both gas and electric to heat it up quickly. Then just shut one or the other off and the remaining one should maintain your HW.


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Old 08-31-2015, 02:58 PM   #22
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I assume you mean FOUR (not for) 6v Interstate batteries. Why 6 V batteries? A 6V Interstate has 232 CCA, two in series (12V) is 464. A Group 27 Interstate 12V battery is 600 CCA and will carry a continuous 15 Amp load for 5.5 hours. Two in parallel will be close to 11 hours. No such data for the 6V. Again, assuming Four batteries - where in the world are you putting them? My Cardinal battery bay is pretty full with two Group 27 batteries.
A batteries CCA rating isn't useful in an RV battery, you can't compare the CCA rating to a battery's Ah capacity and 2 batteries in series don't increase the pair's Ah capacity.

A pair of 12V Interstate batteries provide about 10.5 hours of power at 15A and a pair of 6V Interstate batteries provide 14 hours of power at 15A. Double these times for 4 batteries. (scroll down the link above for the 6V batters)

Additionally, 6V batteries generally will last many more years than the 12V batteries because they are better designed for this task.
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Old 08-31-2015, 03:00 PM   #23
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Batteries

Thank you Scott Bernstein and the rest is I now figured it out I will be running my residential refrigerator on the inverter with the 6 volt batteries and no hot water heater till I get to my destination thank you once again I appreciate all the help
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Old 08-31-2015, 03:15 PM   #24
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Glad we got it straight. Actually the 2/12v vs 2/6v discussion has occupied a tremendous amount of space in these forums. The best answer that I have ever seen goes something like, you only have so many cubic feet to put batteries in and 2/6 volt batteries in series has far more plate area and active storage volume and much less plastic for separators. As such, 6 cells (2-6 volt batteries) gives you more active battery storage area than 2-12v batteries (12 cells, separators, caps, etc) in the same volume, and for the same weight. Personally I believe in deep cycle golf cart batteries than AGM units. They are cheaper and far more commonly available. I have generally used Trojans which are the top line in golf cart units.
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Old 08-31-2015, 03:33 PM   #25
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Originally Posted by ScottBrownstein View Post
Glad we got it straight. Actually the 2/12v vs 2/6v discussion has occupied a tremendous amount of space in these forums. The best answer that I have ever seen goes something like, you only have so many cubic feet to put batteries in and 2/6 volt batteries in series has far more plate area and active storage volume and much less plastic for separators. As such, 6 cells (2-6 volt batteries) gives you more active battery storage area than 2-12v batteries (12 cells, separators, caps, etc) in the same volume, and for the same weight. Personally I believe in deep cycle golf cart batteries than AGM units. They are cheaper and far more commonly available. I have generally used Trojans which are the top line in golf cart units.
That's a great explanation which I haven't seen before. Now it makes sense why 6 volt batteries in series. Thanx!
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Old 08-31-2015, 07:57 PM   #26
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That is the only modification I made before I took delivery last week. I had them take out the group 24, 12 volt battery and put in two 6 volt deep cycle batteries and wire them in series. I'm going to run my WH and fridge on propane and hopefully boondock 4 to 5 days if I'm careful. I looking to replace all of the 12v lights with LED's next month, before winter hits.... do you think 4 to 5 days is feasible. (I'll have my truck to charge things up a little if need be.
Question: is it better to charge a little everyday or try to go 3 or 4 days before using the TV to recharge the batteries?
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Old 08-31-2015, 08:13 PM   #27
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I just must chime in here as this went so bad and in so many crazy directions! But after it all it seems that CAG2525 got WOW such a relief since i think some went by it through china.
I sure how that he got it, and i hope it help some others also in the end;
Happy Camping to all.
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Old 08-31-2015, 08:32 PM   #28
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You are saying before winter, do you have heat? If you do, the furnace will draw considerable current when it is running. LEDs will help but with reasonable use 4 days is a long time. Deep cycle batteries don't get damaged when they are drawn down like regular cells, but I would charge a little each day or every other day.
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Old 08-31-2015, 08:46 PM   #29
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Fortunately, the output from the inverter only goes to the refrigerator so people cannot overload the inverter. It does not have the capacity to power the water heater.
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Old 08-31-2015, 08:47 PM   #30
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Originally Posted by TURBS View Post
Water heater draws 9 to 13 amps on electric.
Good luck with that considering you want to run the fridge to! Lol
If you must run water heater during travel then I'd put it in gas mode.

Only way this would be reasonably possible is if wh was already to temp.

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X's 2 refer on inverter only w/h on propane. or just heat the water before you leave it will still be warm in 6hrs, just sitting in the tank.
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