1. Park the running vehicle close to the vehicle with the dead battery so the jumper cables can reach both batteries.
2. Turn off the engine of the running vehicle and apply the parking brake.
3. Open the hoods of both vehicles and locate the batteries.
4. Identify the positive (+) and negative (-) terminals on each battery. The positive terminal is usually marked with a "+" symbol or is red in color, while the negative terminal is marked with a "-" symbol or is black in color.
5. Connect one end of the red (positive) jumper cable to the positive terminal of the dead battery.
6. Connect the other end of the red (positive) jumper cable to the positive terminal of the running vehicle's battery.
7. Connect one end of the black (negative) jumper cable to the negative terminal of the running vehicle's battery.
8. Connect the other end of the black (negative) jumper cable to an unpainted metal surface on the dead vehicle, such as the engine block. Do not connect it directly to the negative terminal of the dead battery, as this can create sparks.
9. Start the running vehicle and let it run for a few minutes to charge the dead battery.
10. Once the dead battery has been charged enough to start the vehicle, turn off the running vehicle and disconnect the jumper cables in the reverse order of how you connected them, starting with the black (negative) cable.
11. Start the vehicle with the dead battery and let it run for a few minutes to ensure that the battery is fully charged.
Note: It's important to follow the instructions carefully and make sure the cables are connected properly to avoid any damage to the vehicles or electrical systems. If you are unsure about how to charge a car battery, it's best to consult with a professional or refer to the owner's manual of your vehicle.
