Why does your Boat need BatteryKnobs???
Its all about a clean and tight connection to the engine and DC distribution system.
Todays modern outboards and marine inboards are bigger and have a higher current
Higher horsepower usually means more electrical power output from the alternator
to run more and larger electronics and accessories that is current being returned to
the battery and distributed onboard.
ECMs (Engine Control Modules) require clean and reliable power and ground
connections to function properly. A poor connection can have a direct effect on the
performance of the engine.
With standard wing-nuts, it is difficult to apply the proper amount of torque by hand,
thats why some battery manufacturers have gone to hex nuts.
Using a wrench or pliers always exposes you to arching or shorting.
A multitude of problems can manifest themselves due to loose or marginal battery
connections either Positive or Negative. A Floating Ground is a good example.
Some compartments are so tight its difficult to get a wrench or pliers on the terminal.
Since no tools are required its much easier & safer to maintain snug terminal'
connections. 5/16'; 3/8' and 5/16
Posted By MobyMarine