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Basic Info.Product Parameters:  Product Four Functions:Start 12v gasoline(<=3000cc),Charge cellphones etc,Support flash,strobe ,SOS signal.Spare parts:USB wireClampsCar adapterHome adapter How to use the power ?Step1:  Make sure the battery cpacity of the jump starter is above 50%(at least 3 indicator lights stay ON).Step2: Connect the jump start cable to the drained battery of the vehicle;connect the red clamp to th positive"+"terminal and black clamp to the negative "-" terminal.Step3: Connect the jump start calbl to the proper socket of the jump starter.Step4:Now attempt to crank start the