Educate me on 12 volt batteries
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Forum Discussion
afidel wrote:time2roll wrote:Guy Roan wrote:2x 6v is a solution to some issues. If you are good as is then just carry on. You will know when you need something different. Although soon it will be lithium batteries over the GC2 when a better system is needed.
Off and on I see posts regarding changing out the 12 volt battery to two 6 volt ones.
In the past thirty years I have had three trailers and never had a problem with the single 12 volt battery so could someone please explain the reason for swapping to two 6 volt ones.
Guy
Don't fix what is not broken.
It's getting really close already. I can now buy 270Ah of LiFePO4 cells for just over $400 direct from China. That's cheaper than 4x 220Ah 6V that you'd need to have the same usable capacity (~220Ah with long life), but the lithium solution would weigh about 1/5th as much and fit on the tongue or in a much smaller cabinet space.
four good GC have a useable capacity of (220x2)x0.75= 330AH Trojan T-125's have a cycle life of 500+ cycles discharged to 25%SOC (75% DOD) cycle life approaches 1000 cycles at 50% DDD.
Since most of us TT folks even with lots of boondocking would take years to get 500cycles on batteries, GC can give long life at very deep discharges.
I have gotten 10+ years with 30+ cycles to 25%SOC along with many at 50%DOD out of several sets of Trojan's. And several other camping friends have had similar life with similar discharge profiles.
Still a lot heavier than Lithium!!
