1 is usually assigned to your start battery youll need to check your own boat to be sure. In the end choosing both could still leave you yelling for help.
Battery Isolators E Marine Systems
How does a boat battery switch work. Battery switches are an important safety device in boats and recreational vehicles. The alternator will charge your batteryback through the switch so the battery youre using underway will be constantly recharged while the engine is running. The battery isolator uses sensors to determine the number of batteries it is connected to and to draw power from the strongest battery. Your system works something like this. How can battery switches prolong the life of your battery. Abs plastic housing sturdy and durable can resist the harsh marine conditions.
The ability to shut off a battery in a boat can prevent dangerous attempts to start the motor in the event of a fuel leak in the engine compartment. Diode versus solenoid battery isolators. Widely used for car marine boat rv camper truck atv utv battery banks and other devices. A rating of 250 amps continuous is sufficient for most outboards and gasoline inboards. The way your alternator is designed is to recharge a battery. The idle batteries are charged by the alternator and the battery isolator can switch power sources if the battery in use suddenly fails.
Battery switches usually come with 4 positions. The battery youve selected powers all of your 12 volt dc systems engine ignition lights electronics stereo etc. Pick the best battery switch for your boat make sure the dual battery switch is designed for two batteries some are onoff switches and will handle the amperage when starting the engine. Off means that when you are running the engine the alternator is not charging either of your battery banks. If you have your boat battery switch set for both your alternator will choose less work and simply keep a charge going to the fullest battery. 2 is.
1 piece battery selector switch. Use this position when.