hams
Solar Newcomer
Posts: 4
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Post by hams on Nov 14, 2018 0:23:44 GMT
I have an RV with two 12 volt 100 AH batteries which need replaced. Can I use two Renogy Deep Cycle AGM Battery 6 Volt 260Ah batteries and parallel connect them and result in 12 volts and 260 amp hours instead of usint two 12 volt 100 AH batteries which would only give me 20 AH?
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hams
Solar Newcomer
Posts: 4
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Post by hams on Nov 14, 2018 0:27:05 GMT
Sorry that should be 100AH
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Post by tennistime99 on Nov 14, 2018 0:33:06 GMT
You would need to connect them in series. That'll get you 12v at 260ah.
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Post by tennistime99 on Nov 14, 2018 0:35:14 GMT
BTW... Your two 12v 100ah batteries in parallel are equal to 12v at 200ah.
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hams
Solar Newcomer
Posts: 4
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Post by hams on Nov 14, 2018 0:37:05 GMT
My mistake, yes connect them in series. But I would increase my amp hours by 60 correct? The main reason I am considering this is that the 6 volt batteries are cheaper than the 12 volt group 27
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hams
Solar Newcomer
Posts: 4
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Post by hams on Nov 14, 2018 0:40:11 GMT
Thank you for your assistance.
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Post by tattoo on Nov 14, 2018 1:08:24 GMT
My mistake, yes connect them in series. But I would increase my amp hours by 60 correct? The main reason I am considering this is that the 6 volt batteries are cheaper than the 12 volt group 27 You don't want to use a gp27 car battery for solar... If it has CCA in the listing you don't want it..... You need to use a deep cycle battery like you are also asking about... |
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Post by Admin on Nov 15, 2018 22:41:40 GMT
I have an RV with two 12 volt 100 AH batteries which need replaced. Can I use two Renogy Deep Cycle AGM Battery 6 Volt 260Ah batteries and parallel connect them and result in 12 volts and 260 amp hours instead of usint two 12 volt 100 AH batteries which would only give me 20 AH? Hello, just so the post is clear: Yes you are able to use 2 x 6V 260Ah batteries in series in order to have a 12V, 260Ah battery bank. If this is for a solar system, then they are deep cycle batteries which is highly recommended for solar banks. For further clarity, in terms of what Tattoo is saying, are the batteries that you are replacing possessing a "CCA" rating on them? -Renogy Team |
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Post by swampmonster on Nov 18, 2018 0:48:30 GMT
Hams, it appears your desire is to increase your usable battery capacity to operate loads in your RV...NOT to be used as an engine cranking/starting battery.....If that is correct, then you can easily do exactly that with a huge selection of both 12V and 6V batteries available at many capacities and a very broad price range.
IF HOWEREVER, you are restricted to the limits of the battery dimensions of Group 27 batteries, then your choices are very limited and you most likely will not be able to find a true deep cycle battery in that dimension with higher amps...6V or 12V
So, friend....START with where these batteries must fit....Start there first....If available battery storage volumes allow larger batteries than Group 27, then with that volume in mind begin shopping batteries....Measure W width, H height, and length of your battery stowage area.
Lookin down from the top, Group 27 batteries are very near or exactly the size of GC(golf cart 6V batteries)...But GC batteries average 11" tall....Golf cart batteries in 6V are very plentiful in many different price ranges and various configurations(Flooded wet cell or AGM), and all GC 6V batteries offer much more amp capacity than Group 27's, many inexpensive ones offer 220 amps each, and they truly are deep cycle batteries.
So if your stowage location is only for Group 27 size batteries, make certain to check the height of that stowage area...Most often you can go with 6V GC batteries in the place of Group 27 providing the stowage area is tall nuff.
But EVEN THEN, even if you have just nuff room to install and connect those batteries, check to see how hard it will be to check their water levels if they are flooded wet cell batteries....Because trust me, if they are difficult to get to, then you will NOT take the time to do it when you should.
Friend, I was a nuclear and aux mechanic on destroyers and submarines for 20 years, so I can admit that living inside and maintaining all the stuff inside my vessel even tho essential to my very life was often just too difficult to reach when the maintenance schedule required it...If it was too hard to reach, it got neglected....If certain things got neglected we all died.
Wet cell batteries in RV's are often very neglected and die early because they need frequent, routine monitoring of water levels, so maybe if you can install AGM type GC batteries, you might wanna select more expensive AGM's if access to them is restricted nuff to make you lazy.
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