Dual Pro Battery Fuel Gauge - Marine Dual Read Battery Monitor - 12V/36V System - 15ft Battery Cable One Size. Many employ old technologies. (PCS) battery fuel gauges change that paradigm. Think of the old Motorola Brick Phone from the late 1980s versus todays iPhone. PCS battery fuel gauges measure a batterys energy state with precision and accurately display the information. At a glance the gauge is easy to read and understand. Since the system utilizes intuitive technology it fits and adapts to a wide range of applications. We take great pride in the performance quality and versatility of our products backed by exceptional customer service. Specifications for Dual Pro Battery Fuel Gauge - Marine Dual Read Battery Monitor: Manufacturer: Dual Pro Color: Black Package Contents: Dual Pro Battery Fuel Gauge - Marine Dual Read Battery Monitor Dual Pro BFGWOM1536V/12V: Battery Fuel Gauge - Marine Dual Read Battery Monitor - 12V/36V System - 15ft Battery Cable One Size