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Old 08-31-2014, 12:53 AM   #21
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This is an excellent question.
I am not an expert on C/C's, but I do know that it is best to have a charger that can be programmed for the type and size of battery (or batteries) you have installed. AGM batteries can handle a higher recharge rate than flooded batteries but AGM's can not be equalized at a high voltage because they are sealed.
Here are links to websites with excellent information on RV Electrical.
Electrical Tutorial
RV Electrical
http://www.marxrv.com/12volt/12volt.htm
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Old 08-31-2014, 11:11 AM   #22
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Just found a good article on Trailer Life, not as technical though.
All about DC Power Conveerters in RVs
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Old 08-31-2014, 11:31 AM   #23
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If the batt are new the first time they are charged, they well takemore water ! than normal
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Old 08-31-2014, 11:33 AM   #24
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The RV Battery Charging Puzzle

If you have a large pot of joe, you should check out "The RV Battery Charging Puzzle". The beginning is a little slow, but further down he really cuts to the meat of it.

The RV Battery Charging Puzzle ¬ę HandyBob's Blog

Now we can all go back and talk about mods.
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Old 09-07-2014, 10:57 PM   #25
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So I read the handy bob article. Thought about it. And now I think I need to replace my inverter, wiring, and batteries. Or I could just buy a separate charger and new batteries?
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Old 09-08-2014, 05:56 AM   #26
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I installed 2 Interstate 6 v GC batteries on my TT with 123 watts of solar charging. In 2 seasons of use I have been checking the fluid level to make sure the cells are covered. I have never had the add water. Are others having the same experience? I would have thought the fluid level would have dropped somewhat.
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Old 09-08-2014, 06:32 AM   #27
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My system uses water when they are discharged/charged heavily..but not much more than a few ounces for the pair of Trojans. In between trips, almost none, as in a few drops in each cell.
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Old 09-08-2014, 10:19 AM   #28
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Don't know if it's been mentioned but use only distilled water to top off wet cell batteries.


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Old 09-15-2014, 05:00 PM   #29
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OK, really new RV'er here, picked up a 2015 Sunseeker 3010DS 2 weeks ago and was trying to check battery water levels and I can't figure out how to get the battery covers off to see inside. I see from a tag on the batteries that they are 27MDP (presume Exide) does anyone have any suggestions? Do I have to disconnect them first or ???
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Old 09-15-2014, 05:16 PM   #30
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Quote:
Originally Posted by otilopnad View Post
OK, really new RV'er here, picked up a 2015 Sunseeker 3010DS 2 weeks ago and was trying to check battery water levels and I can't figure out how to get the battery covers off to see inside. I see from a tag on the batteries that they are 27MDP (presume Exide) does anyone have any suggestions? Do I have to disconnect them first or ???
Any chance you can post a picture. Usually the covers (2) are rectangular and you can pry them up revealing three cells each, with a screw driver. Water (distilled) should be added until it reaches the bottom of the plastic fill holes.No, you do not have to disconnect. Just remember its acid, so treat it with respect.
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Old 09-15-2014, 06:00 PM   #31
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Mine didn't come off easy.... No joke wear eye/face protection, way too easy to splash a little.
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Old 09-15-2014, 06:21 PM   #32
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Also make sure they are not sealed. If so, prying a "cover" off will destroy the batt integrity.
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Old 09-17-2014, 02:10 PM   #33
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Thanks to all for input on this. The tops were hard to get off because of placement of cables and straps but thanks to one of those paint can openers with a hook on the bottom I was able to get the right leverage to pry them up. YEEHAW and the batteries were topped off.
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Old 11-23-2014, 09:31 PM   #34
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And my batteries are dead now..... Won't hold a charge.
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