Connect the SAE71 weatherproof permanent lead permanently onto your vehicle's battery, Then leave the connector in an easily accessible place for fast connection to your OptiMate battery charger. The weatherproof rubber cap and sheath protects the connector against penetration of liquid or dirt. SAE connectors are equipped with an innovative heavy-duty connection system which provides a reliable weatherproof connection between OptiMate battery chargers or OptiMate accessory leads the connection system is rated at 15 Amps, allowing safe use of high amperage accessories such as heated clothing and riding gear, Electrical connections between cable and connector pins are fully sealed, whilst rubber sealing shrouds enhance the weatherproof rating of in-line connections the connection system is compatible with standard SAE connectors which are gaining popularity worldwide as a battery charger inter-connector and is widely used as a connector in heated riding gear.