MAREX 375
46
by Nikl Design USER MANUAL
Picture 37: Batteries crossover switch (1).
When the engine is running, the starter battery is charged by the alternator. It is
important to regularly check and maintain this system.
❖ Charging voltage
The voltage by maximal charging is normally around 14.2 to 14.4 V.
During charging the voltage will rise on the batteries. The battery charger automatically
decides when the charging is stopped.
❖ Battery voltage
The voltage on a normal battery is around 12.3 to 12.8 V (if it is unused).
Note: To get the correct voltage when measuring it, you must measure directly on the
batteries and not on the generator.
The service and the starting batteries have a voltmeter located in the fuse box, by the
helmsman position. If the voltage drops under 11.5 Volts, they can be permanently
damaged.
Please note that LEAD ACID batteries will create gas at 14.4 Volt. This gas is very
explosive.
Hint:
• The gas smells like “rotten eggs”.
• Be aware of bad smell and act quickly if gas is created.
If the battery charger is operational and well maintained, it will automatically stop
charging before gas is created.
CAUTION
NEVER turn off the main switch during the engine operation.
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