Battery Drain

Originally posted by Grinkle192 Originally posted by StephenH Things to consider: Two 12V batteries will weigh much less than two 6V batteries. Comparing two batteries of the same physical size, in general, a 6V battery has fewer cells in it than a 12V battery, so it has fewer lead plates, so it weighs less.  I think you would agree with the fewer cells thing, so I am wondering if I mis-understand your comment or if maybe you have a typo in your comment. I don't think 6V and 12V batteries will typically be the same size, though.  In systems I have read about, the 6V batteries are a smaller form factor than the 12V batteries being compared against, and the folks decide what to use based on what they have space for. To the OP, if you replace 2 6V batteries with 2 12V batteries, I'd be surprised if the weight does not increase and the space needed increases.  Along with that, I'd expect your capacity to increase. This depends on the specific batteries involved, and I'm sure its possible you have 6V batteries right now that are so large that you can find 12V batteries that are lighter and smaller, but I don't think that is typical.

Originally posted by Grinkle192 StephenH - "when comparing the typical 12V battery with a pair of GC-2 batteries, the GC-2 batteries will be much heavier than a single 12V battery" This makes sense to me. I also see that the stock battery on my new 192 is a Marine battery, and I agree with your assessment that it is not true deep cycle. If I replace it with a 100Ah Lithium (not sure I would, but if I did upgrade, that is likely what I would consider) would the A/C charger be able to charge it, do you know?

It depends. I don't know what power center you have. The WFCO 8955 does not properly charge LiFePO4 batteries. I swapped out the converter for a WFCO-8950L2-MBA, which is what works. I also installed a DC to DC charger because the Frontier was not charging the battery. Because the battery is a little higher in voltage, it was fooling the Frontier's alternator control into thinking the battery was charged, so if effect, the trailer's battery was supplying power to the truck and I would arrive with a battery that had much less charge than when I started.

Okay, the WF-8955-AD-MBA was not available when I did my LiFePO4 conversion. I guess the newer RVs will have the WF-8955-AD power center so that will mean that part of what I had to do would not be needed. The DC to DC charger would still be needed though if one wanted to charge an LiFePO4 battery while driving.

Originally posted by StephenH StephenH - I am hoping that the projected much longer lifespan of the LiFePO4 battery will pay off in the long run.