There was a link on here a while ago to a site explaining pretty much everything about RV batteries. I've done a search and cannot seem to find it. I'm looking at some AGM batteries but can't decide if I want to go 6 or 12, what group number, how to wire them, is my equipment ok to run agm... I have all kinds of questions.
I found this site to be very informative. I think I stumbled across it a while ago on this site. I have had it bookmarked ever since and reference it every so often.
So. I think I've decided to go with two 6 volt batteries. I like the Trojan T-145's but they are pricey. PEople are getting 8 years of use out of these though. I might go with the cheaper Interstate GC2 RV-XHD and see how they do.
Measure your battery box H, W, D, to determine the largest size battery/batteries that will fit inside those dimensions. For me, it was 2 group 31 SEARS PM-1 AGM deep cycle RV/Marine batteries. They speked out well and were the most reasonably priced. They are rebranded Optima batteries. My battery box was about a quarter inch to short in height to fit the Lifeline group 30 batteries which would have given 300 AH capacity but they were about $200.00 each more than the SEARS PM-1's. I went with 12 volt batteries because if one dies, you still have power, If one of your 6 volt dies, you're out of luck.
Camper_Jeff_&_Kelli wrote: Measure your battery box H, W, D, to determine the largest size battery/batteries that will fit inside those dimensions. For me, it was 2 group 31 SEARS PM-1 AGM deep cycle RV/Marine batteries. They speked out well and were the most reasonably priced. They are rebranded Optima batteries. My battery box was about a quarter inch to short in height to fit the Lifeline group 30 batteries which would have given 300 AH capacity but they were about $200.00 each more than the SEARS PM-1's. I went with 12 volt batteries because if one dies, you still have power, If one of your 6 volt dies, you're out of luck.
The marking "RV/Marine" on batteries is a big red flag...
They are not true Deep Cycle batteries.
Paul
Extra Class Ham Radio operator - K9ERG (since 1956)
Retired Electronics Engineer and Antenna Designer
Was a campground host at IBSP (2006-2010) - now retired.
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2005 Four Winds 29Q
1982 6.2L Diesel Suburban 1500
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