Item Features: Fitments: The knife blade battery switch can be used on car marine boat RV ATV at top post position for 12-24V battery. Installation: Firstly, disconnect the cable connection on the battery. Make sure the negative cable is always disconnected, then the positive cable. Assemble the battery switch to the negative cable but do not over tighten it. Note to keep the lever is always open when you connect the negative cable and make sure the connection is good. Solid Material: The knife switch is made of brass with electroplated surface, which has a good conductive performance and is totally rust and corrosion resistant. Easy Usage: Just lever up the connect, then the battery will be cut off. In case your vehicle has to be stopped for a long time, you can only cut off the knife blade and it will prevent the battery from draining and improve the battery’s lifespan. Warranty: We offer one year warranty for the blade switch. If you are not satisfied with it, simply contact us and get your refund Item Specifications: Material:Brass, PVC Maximum Current: 750A Rated Current: 250A Fitment： The knife blade battery switch can be used on car marine boat RV ATV at top post position for 12-24V battery. Packing List: As shown in the figure NOTE: (1)It would be highly appreciated if you might contact us first once you have any problems concerning the items. And you can expect all the issues would be resolved ASAP! (2)Please let us know before you send us the neutral/negative feedback that wont help to finish the issues. And I will definitely try my best to provide the best solutions which would meet our satisfactory!