9.3 Double-battery system
The boat can be equipped with a double-battery electrical system:
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The primary battery is the engine battery.
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The secondary battery is a service battery intended for use when the engine is switched off and there is no charging current available.
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Each battery has a main switch controlling the connection to the boat's electrical system.
It is recommended that you keep both batteries on when the boat’s engine is started and the boat is in motion. Both batteries are charged when the engine is on.
To use the boat’s electrical system with the engine turned off:
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Turn off the engine main switch. This disconnects the engine battery from the system.
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The engine battery will remain charged even if the service battery is entirely discharged while the boat is stationary.
For charging, disconnecting and replacing the batteries, see Maintaining batteries.
The wiring diagram for the double-battery system is shown in the wiring diagrams available in the manual appendices.