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The Battery Isolator 100 A Polyethylene from Battery Doctor is a top-quality item that offers numerous advantages to motor vehicle owners and users. Its primary function is to disconnect the battery while allowing charging functions, effectively preventing draining and prolonging battery life. With a high max current capacity of 100 Amps, it ensures maximum protection for batteries in various heavy-duty applications like work vehicles or boats. Made from durable materials such as steel for connections and PE for housing, the product is built to last. This battery isolator also features a sleek black design that makes it an excellent addition to any vehicle's interior. Its benefits include saving money by prolonging battery life, reducing wear-and-tear on electronics caused by power fluctuations or battery drains, and preventing unauthorized use of the vehicle due to accidental keyless entry triggers. With this device in your car or truck, you'll have peace of mind knowing that your battery is safe and secure, making it an indispensable tool for any vehicle owner looking to optimize their power usage.