Section 120.350 - Batteries-general(a) Where provisions are made for charging batteries, there must be natural or induced ventilation sufficient to dissipate the gases generated.(b) Each battery must be located as high above the bilge as practicable, secured to protect against shifting with the roll and pitch of the vessel, and free from exposure to water splash or spray.(c) Batteries must be accessible for maintenance and removal.(d) Connections must be made to battery terminals with permanent type connectors. Spring clips or other temporary type clamps are prohibited.(e) Batteries must be mounted in trays lined with, or constructed of, a material that is resistant to damage by the electrolyte.(f) Battery chargers must have an ammeter connected in the charging circuit.(g) If the batteries are not adjacent to a distribution panel or switchboard that distributes power to the lighting, motor, and appliance circuits, the battery lead must have a fuse in series, located as close as practicable to the battery.(h) Batteries used for engine starting are to be located as close as possible to the engine or engines served.