You are exiting the NIH SBIR/STTR website and entering a non-federal website. External links provide additional information that is consistent with the intended purpose of this site. The NIH SBIR/STTR program cannot attest to the accuracy of information provided by these links.
When connecting your battery, connect the positive (red) first and the negative (black) second. When removing the battery, disconnect the negative (black) first and the positive (red) second. Been doing this for nearly 30 years. ALWAYS connect the positive post first.
Keeping order. Weâre all taught that when jump-starting a car, you must connect the booster cables in the right sequence. Connect the positive cables to the positive terminals on each battery, and then connect the negative cable to the negative terminal on the working battery. For the last step, attach the negative cableâs other clamp to any unpainted metal on the dead carâs frame, as far from its battery as the cable allows.