Please make sure there is enough contact surfaces.
3> Plug into battery hole please plug into the end <3> Prees the round power buttoon and go to your car to start.Package Include: - 1x Jump starter battery - 1x Three-in-one USB charge adapter - 1x 12V Storage battery wire clip - 1x AC Home Power adapter (Plug suit your location) - 1x Car charger adapter - 1x Tool Bag 20000mAh Car Jump Starter Auto Battery Booster Power Pack with Clamp Portable Truck Accessories Black+White Interior/Exterior: Exterior Included Items: No Dimensions: 2.