KUNCAN Automotive Emergency Portable Battery Smart Jumper Starter Booster Clamp Cables, Replacement Booster Battery Aliigator Clips to EC5 Connector for 12V Portable Car Jump Starter Replacement jump box cables, fits most brands of mini portable jump boxes, car jump portable starters and mobile chargers. Support up to: 20000mAh Power bank at 600Amp Current. (&lt;3 seconds) Strong Alligator Clamp Clip with EC5 Plug Connector. Input/output: 12V. Wire guage:1015 10AWG. Use of car jump starter: 1)- connect the red battery clamp of 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) - and start the vehicle. PAY ATTENTION PLEASE. When using this item, please be careful when using, this item can NOT be overload, check your device power before using please. Note: Please check your power bank if it can support your car.