7.5.1 Maintenance of the batteries

Component Maintenance Notes and precautions
Batteries Battery check
(accumulators)
During the periods when the yacht is not in use, have the battery terminals disconnected, or leave them all connected and have periodically all batteries charged (generator included).
CAUTION

In case of contact with the batteries electrolyte wash contaminated part with fresh water for at least 15 minutes and ask for a doctor.

CAUTION

Remove bracelets, rings and every other piece of jewellery before working on the batteries.

WARNING

All the maintenance listed must be carried out by specialised personnel.

CAUTION

Monitor the voltage of the engine and user batteries.
During the charging phase 29.1V can be reached, this is a temporary value, well tolerated, both by the batteries and by the battery charger.
This value has to be monitored and if this situation lasts for too long, the magneto-thermal switches of the battery chargers must be disconnected.

CAUTION

Always keep the batteries charged and recharge them periodically even if the yacht is left unattended.
If the charge level drops to the minimum, the batteries can get irreparably damaged.

CAUTION

Check the condition of batteries for the presence of galvanic corrosion on connection poles and terminals; if some is noticed, address to the Service Department and have the pieces showing this kind of problem replaced.

Carry out following checks:

Terminal inspection

DANGER

Batteries may be subject to explosion hazard, with subsequent risks of serious personal injuries. Do not use open flames, smoke, cause sparks or use arc-welders in the area where batteries are located. Do not disconnect battery cables when the generator is running.
Battery acid may cause serious injuries. Wear safety goggles, gloves and protective clothing.
Do not wear any bracelet, ring or any other jewel when operating on batteries.
In case of contact with battery acid, wash the contaminated part with fresh water for at least 15 minutes and address to a doctor.

DANGER

Always remove the negative terminal (-) for grounding connection first and connect it last.