Vehemo CJS-SK02 Booster Cables, Jumper Cable alternative, No Cable Clipping Option, Used in conjunction with most power bank jump starters and Operated inside the Car, 12V (compact cars only)Reverse charging inside the car, need to use with the car emergency start power collocation ( 12000mah or more start power )Very practical battery detection function, ready for the battery examinationAdapting all kinds of automobile starting power supply