What is the first step to take when jump-starting a battery?

The first step to take when jump-starting a battery is to turn off the ignition and all accessories in both vehicles. This ensures safety and prevents any electrical surges that could damage either vehicle's electrical systems during the jump-start procedure. By turning off the ignition, you reduce the risk of sparking and ensure that the vehicles are in a safe state before making any connections.

After ensuring that the cars are turned off, the next important steps would involve connecting the clamps in the correct order and ensuring the vehicles are safely positioned without touching. Matching the voltage of the batteries is also crucial; however, it should be noted that standard car batteries are typically 12 volts. Thus, as long as the batteries are compatible in this way, it can be evaluated after ensuring the vehicles are turned off. Prioritizing safety by turning off the ignition helps prevent accidents and further complications during the jump-start process.