How to Charge a Battery?

Clamp the red positive wire to the positive terminal of the dead battery. Clamp the red positive wire to the working vehicles positive battery termina.Clamp the black negative wire to the working vehicles negative battery terminal.Clamp the black negative wire to an unpainted metal surface of the dead car to get it grounded.Start the working vehicle and let it charge several minutes. Then try starting the dead car. For more information see here: