2 12 volt batterys or 2 6 volt
what gives me the most bang for my money. every other rig that I have bought always had 6 volt battery's but the new one has 2 12 volt. not sure what works better.
Forum Discussion
pnichols wrote:red31 wrote:
... are thicker plates 'easier' to recover from neglect/abuse?
The 6-volter guys always bring up the "thicker plates" defense against the 12-volter guys.
Taken at face value this is seems to make sense, but it's actually a misleading defense. 6 volt batteries MUST HAVE and BETTER HAVE thicker plates if they're going to last as long as 12 volt batteries. That's because 6 volt batteries carry twice the current per cell as 12 volt batteries carry per cell.
The caveat in my statement above of course is "all other things being equal". The 6 volt versus 12 volt discussion is rarely comparing what it should be comparing ... 6 volt apples to 12 volt apples. For instance, what should be compared is 6 volt flooded deep cycle batteries to 12 volt flooded deep cycle batteries. :)
I can assure you that a Costco 6V GC-2 carries 208 amps across the plates, while a Trojan 12V T-1275 carries 150 amps across the plates. The amps produced has nothing to do with the voltage, thickness of the plates, it has to do with what the engineers design into the battery. If the cost accountants don't screw the engineers over, they can be designed equally for amperage output. You may need 2 batteries in 6V to get to 12V, but that's got nothing do do with amperage output.
You should NEVER compare car jars, or any battery that has a "Group" in the description or naming of it... 24, 27, 29, 31, etc, to a true deep cycle battery used in traction devices, sweepers, or golf carts, or as used by some in true dry camping /boondocking non pedestal plugging in camping where you don't pay to park or hookup.
