{Super Easy To Use For 12V DC System}-- sae to sae cable connecter,One way plug battery charger cable connector.Plug and Play.Pretty safe and very easy to install.Use with battery charger maintainers,battery trickle chargers,solar controller and solar regulators. {Very Safty To Use} --The Red and black color for the ring termial adaptor and bare strip adaptors.Normally,the Red cable stands for positive + and the Black Cable stands for negative - ,some brand solar charger or battery charger kit may not compatible with the polarity,you need to check the polarity by a voltmeter before connecting.Or it may cause polarity reverse.Get the Polarity Reverse Adapters to search asin B07GPGPTFV. {16FT 18AWG Battery Charger Extension Cable} --This 16ft battery charger extension wire can be used in case the lead wire of your Solar Panel battery charger or product is not long enough.Connect the Extension to the lead wire and the solar product.The cable wire is gauge 18AWG.Do not use to make connections exceeding 5 amps. {Bare Strip Wire Adaptor} --The dip tin bare strip wire connector cable is 18AWG.Do not use to make connections exceeding 5A(current) and 50V(voltage). {Ring Terminal adaptors} --The cable wire is 13AWG.Do not use to make connections exceeding 15Amp and 50Volts.This Ring Adapters can be easily connected to your 12Volt batteries.[WARNINGS:] Do not use to make connections exceeding 5A and 50V when the 16ft extension cable is connected with the Ring connectors or the Bare strip wire.