9.4 Maintaining 12 V batteries

Service the 12 V batteries regularly and follow their charge status in order to prevent them from discharging.

Electrical hazard

Short circuit may cause serious injury or equipment damage.

Remove all metal jewellery before handling batteries.

When connecting or disconnecting batteries, make sure that no metal tools make contact with the aluminium parts of the boat or both terminals of the battery simultaneously.

Disconnecting batteries

The batteries need to be disconnected in the following cases.

  • You want to deactivate the automatic bilge pump.

  • In connection with maintenance and winter lay-up.

  • When replacing batteries.

Replacing batteries

Requirements for new batteries:

  • The 12 V battery should be a regular lead-acid battery or a deep-cycle lead-acid battery.

  • If you are using a special type of battery, take note of any specific requirements in terms of connections, charge regulators, and protection from water.