7.8A marine (boat) battery must be removed and charged on shore. To charge it onboard requires equipment specially designed for marine use.
8.grounding and ac power cord connections
RISK OF ELECTRIC SHOCK OR FIRE.
8.1This battery charger is for use on a nominal
and ordinances. The plug pins must fit the receptacle (outlet). Do not use with an ungrounded system.
8.2 Never alter the AC cord or plug provided – if it does not fit the outlet, have a proper grounded outlet installed by a qualified electrician. An improper connection can result in a risk of an electric shock or electrocution.
NOTE: Pursuant to Canadian Regulations, use of an adapter plug is not allowed in Canada. Use of an adapter plug in the United States is not recommended and should not be used.
8.3Recommended minimum AWG size for extension cord:
•100 feet (30.5 meters) long or
(0.82 mm2) extension cord.
•Over 100 feet (30.5 meters)
• 7 •