Originally Posted by Michael S
They do make a commercial vehicle version and you're right it was cheaper, but less so than I expected and they claimed the marine version was different. You're probably right and there's no difference.
The commercial one probably has a higher shutoff point-you're unlikely to be able to start a truck with 23.8v from cold-and bloody great solenoids to isolate tail lifts etc. You'd probably have to waterproof the switch too-but they look a hell of a lot prettier (black rocker switch)and have a flashing LED as part of the rocker switch to tell you if it's tripped.
Course, if you want to get something a whole load cheaper there's always this... http://www.sailgb.com/p/battery_guard_c8310/
I suspect if you were to cut the cables and route your accessory wiring through it then it'd do the job-as long as you havn't got 15 amps running through it continuously.
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