12v marine/deep cycle batteries
I know they are not true deep cycle and I have no intention of going to 6 volt batteries. Which would be your choice between the Interstate SRM-29 and the WalMart Everstart Maxx 29DC? I can get the I...
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NinerBikes wrote:AZDesertRat wrote:
I checked Costco and the largest they had was a Group 27 Interstate.
6V batteries are not an option, don't have room on the tongue for 4 and I'm not going to rely on only 2. I will check the Trojan dealer to see what they have in 12v.
I will say the two Group 24 batteries I now have are going on 6 years old and still working fine. The first thing I did when I bought the toyhauler was ditch the old power converter and install a Progressive Dynamics system with the charge wizard. I learned that with my old 5th wheel after going through several batteries in a couple years.
Why do you have 2 100 watt solar panels, then? That is about perfectly balanced daily sun wise in AZ for a pair of 6 volt batteries. Set the charge controller up to 14.8V and let it shine, no worries.
Two 6 volt batteries will fit in the same foot print as two 12 volt batteries on the tongue. Or do like I did, get one AGM telecom battery used, you'll have to hunt it down, 12V 150 AH. True deep cycle, perfect for dry camping.
Why bother asking for dry camping battery advice when your mind is already closed to the experiences of veterans who know what would work best for you? :h :S
You can get away with 200 watts of solar on a pair of size 24 12 volts just fine. But they are marginal for a pair of 6 volt.
Full sun output of a pair of 100 watt panels is about 5 amps each for a total of 10 amps. C/20 rate of a size 24 is about 4.25 amps vs a typical 6 volt of around 11 amps. Note C = Ah battery capacity.
