marinco.com BATTERY MANAGEMENT 60 Battery Switch Operation Diagrams As more and more electronics and electrical accessories are added to your boat (autopilot, refrigeration, etc.) the use of multi-batteries becomes a necessity. Guest components allow you to set up the system (from simple to complex) for your boat’s application. The following diagrams are for use in identifying and designing the right system for your boating needs. Single battery Installation: To shut off all power at source. Recommended installation by approved authorities. Two batteries without isolator Installation: To select a starter battery and ship service battery. Manually isolates each battery, parallels both batteries for emergency start, master disconnect, manually selects batteries for charging. 12 VOLT BATTERY ALT STARTER ON/OFF SWITCH ENGINE 1 12 VOLT BATTERY 12 VOLT BATTERY ALT STARTER BATTERY SELECTOR SWITCH ENGINE 1 2 2 1 Two batteries with isolator Installation: Isolator automatically selects lower charged battery to be charged first. Full battery can't discharge to drained battery. Dedicated system, no flexibility, no emergency parallel or disconnect function. Two batteries with emergency parallel Installation: An isolator automatically isolates each battery, lower charged battery will automatically be charged first. Two different size batteries can be used, larger for ship services, smaller for engine cranking. Switch selects usage, master disconnect, emergency parallel function. 12 VOLT BATTERY 12 VOLT BATTERY ALT STARTER ENGINE ISOLATOR 1 2 2 1 12 VOLT BATTERY 12 VOLT BATTERY ALT STARTER BATTERY SELECTOR SWITCH ENGINE ISOLATOR 1 1 2 2 2 1
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