Features: Battery jumper cable designed to serve as a jump starter replacement cable clamp set ,Compatible with most car 12V jump portable starters, and mobile chargers to jump-start a dead or weak car battery. Smart cable builds in 10 safety protection of short-circuit, reverse-charge, over-temp, over-discharge, over-charge, reverse-polarity and over-current to protect your engine. Wire: 10 AWG, Jacket: Silicone Rubber. Connector: EC5 Female Plug. Compatible with most 12V EC5 male output battery booster jumper . Strong alligator clamps with tinned copper material cable , make sure great-quality and safety protection to is the more durable Please be careful when using this product:Do NOT reverse the operation sequence of the jump starter. this item can NOT be overloaded, check your device power before using, please. Do remove the product from the vehicle within 30 seconds after the vehicle is started, or it may cause security incidents. Connector A: copper Clamp Clip Connector B: EC5 Female Plug Wire Guage: 10 AWG Conductor: Tinned copper Total length: about 40cm Input: 12V Operating temperature: -20 to +60 Support up to 20000mAh Power bank at 650Amp Current (<3 seconds) Eazy to Use 1 - Connect the red battery clamp of the jumper cable to the vehicle's positive (+) battery and connect the black to the negative (-) pole; 2 - Plug the cord of jumper cable into the jumper starter's socket; 3 - Start the car and remove the clamps. Do not use jump starter to start the vehicle if the number of battery indicators is less than 3 to protect the jump starter from damage.