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Batteries are relatively maintenance-free. However, to increase the batteries' effectiveness and life, perform the following:
•
Keep the batteries fully charged at all times. Batteries that are kept full or near fully charged last longer than batteries stored
with a partial charge. The charge level of the batteries can be monitored using the voltmeters on the helm instrument panel
(engine batteries) or tribulation panel (accessory batteries).
•
Inspect the batteries at least once every 30 days for corrosion, loose wiring, dirt, and other issues.
•
Periodically clean the battery terminals and cable connections. Remove any accumulation of dirt on the top of the battery
case. Use a wire brush to clean the terminals. Coating the terminals with a terminal-protecting product will help reduce
corrosion that can form in these areas.
•
Make sure the battery cables are securely attached to the terminal posts. Tighten the terminal nuts snugly using a torque
wrench to 20 ft-lb (27 Nm).
•
Remove the batteries from the yacht during periods of extended storage in freezing climate areas. Store the batteries in a
cool (above freezing temperature), dry area. All batteries lose some charge during storage, but the lower the temperature, the
less charge is lost. Avoid storing the batteries in a humid area.
•
Check the battery charge level once every three months using a hydrometer or installed voltmeter. Charge the battery if the
specific gravity of the battery is less than 1.225 or the voltage is less than 12 volts. Avoid overcharging the batteries.
•
Engine start batteries are maintenance-free. Electrolyte cannot be checked.
•
Deep cycle accessory batteries require that you monitor the electrolyte levels in the cells and keep them topped off to at
least the top of the plates with distilled water.
cHARGinG tHe BAtteRieS
NOTITE: Never allow the yacht's batteries to become completely discharged. Completely discharging a battery can
damage it so that the battery can no longer be recharged.
While the engines are running, the designated alternators generally supply enough power to replace the power used by the
yacht's DC equipment.
The PORT and STARBOARD engines are equipped with an alternator that charges the 12-volt accessory battery bank. The
DC equipment will eventually drain the batteries being used without the engines running.
IF THE BATTERIES GET DRAINED, EITHER:
•
Start the PORT or STARBOARD engine or use the onboard battery chargers to recharge the batteries.
•
If not connected to shore power, run the generator to activate the battery chargers.
The battery charger should always be operating when the yacht is connected to shore power. Turn all battery master
disconnect switches to the OFF position if the yacht is unoccupied for an extended period of time and if the yacht is not
connected to shore power.
BATTERY CHARGERS
Two battery chargers are equipped onboard.
•
One 60-amp battery charger: Monitors the voltage levels of the engine and accessory batteries
•
One 60-amp battery charger: Monitors the bow/stern thruster and generator batteries
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