Capacity is king. No need for superfast AGM charging with solar. IMO 80% down on an AGM is harder on the battery than 50% on the wet cell. Either can go down 60% or 70% for part time use without too much worry.
Only if you can reposition the AGM to get the capacity up... but the extra battery(s) will increase cost.
AGM batteries have a lot of advantages. Many of them irrelevant to the RV world. They don't out gas but RV's typically have vented battery compartments.
They can take a much higher charge current but most RV's have kind of weak chargers.
They can survive more physical vibration like an off road vehicle or machinery would subject them to, but RV's typically don't go extreme off roading.
They don't require checking the water levels but that's really quick and easy.
I am looking at putting an AGM in, along with replacing the converter with an inverter/charger, then a 290 watt solar on the roof. I figure running the generator for about an hour in the AM while the kids abuse the shower (hairdrier) should put back most of what came out of the battery overnight + breakfast. The solar can do the rest during the day.
You didn't mention this as an option, but I will throw it in. I would without hesitation go for 2 6V GC batteries. IMHO, that is your greatest bang for the buck for RV use.
crcr wrote: You didn't mention this as an option, but I will throw it in. I would without hesitation go for 2 6V GC batteries. IMHO, that is your greatest bang for the buck for RV use.
crcr wrote: You didn't mention this as an option, but I will throw it in. I would without hesitation go for 2 6V GC batteries. IMHO, that is your greatest bang for the buck for RV use.
I don't think he has room for 6V's.
He should have room if he can do two 12v. He would only have 220 ah or 110 ah usable before 50% discharge. The flooded 12v pair would still be more at 155 ah at 50%.
If the flooded 12v are GC type, wouldn't they carry many of the advantages of 6v cg batteries?
One thing not discussed is his solar and the possibility it will make critical choices about battery capacity mute.
2011 GulfStream Amerilite 25BH
2007/2003 Ford Expedition
Nights camped in 2011 21
Nights camped in 2012 16
crcr wrote: You didn't mention this as an option, but I will throw it in. I would without hesitation go for 2 6V GC batteries. IMHO, that is your greatest bang for the buck for RV use.
So, what would be best . . . . ONE 6 volt set (two 6 volt) GC batteries, OR, TWO 12 volt batteries (type 24 or 27)?
thanks ken
2011 Ford F-350 6.7 diesel, Crew Cab, LB, SRW, 4X4, White
Cedar Creek 34SB, 37 feet 5th wheel, Reese 20K Hitch
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You want AGMs.
