6 volt vs 12 volt batteries for boondocking
Hi all, While waiting for our new 28' Stealth toy hauler we're trying to figure out the best batteries to get for when we're back in the hills camped off the grid. We ordered the optional 200 watt ...
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mike-s wrote:ktmrfs wrote:Where did you get that from?
Even true deep discharge 12V like Trojan 12V renewable energy 12V have about 1/2 the cycle life of a similar 6V configuration.
Trojan says otherwise. In their spec sheet, they show the 6V T-105 right next to the 12V J185H (which has the same capacity as 2 T-105s). Both are listed in the same 1200 cycles @ 50% discharge section, and they share the same cycle life curve. It's the Group 24/27 batteries which have shorter lives (and smaller capacities), because the case size restricts how large the plates can be (a 185 weighs over twice as much as a 27) and how much electrolyte they can hold (the 185 is twice the volume).
The reason to buy 6V GC2s is because they tend to be cheaper and easier to find locally due to the numbers used in golf carts, not because 6 V batteries are necessarily better than 12 V ones.
the chart I saw didn't show the 12V you referenced, only the 24/27 deep discharge. sounds like the other 12V you referenced is close to the 8D size, which is like 2 GC.
so there are 12V deep discharge with similar life cycles to a GC
