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Originally Posted by Dzdconfusd
...We are 12 volt because of commonality and availability of automotive parts so I'm fairly certain that won't change...
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Actually, the automobile industry is very interested in moving to higher voltage electrical systems. With the amount of power being used by an ever-increasing number of accessories, wire weight is becoming a real issue. Higher voltages permit the same power to be conveyed using lower current, so thinner wires are practical. I wouldn't be at all surprised to see 42-volt electrical systems becoming common in the next five to ten years.