Battery Charge Relay Control
The battery provides power for two purposes:
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Engaging the electric starter motor to start the engine
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Powering the 7S display when the engine is off
The engine management system engages the battery charge relay and charges the battery only when the following conditions are met:
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Load shed relay is engaged by the engine management system
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Engine speed exceeds 2500 RPM
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Chassis DC voltage exceeds 13 volts