Should You Disconnect the Negative or Positive Terminal First When Removing a Car Battery?

[MacAna]

Disconnect the negative terminal first, then the positive terminal. Here are some precautions to keep in mind when installing or removing a battery: 1. During installation, connect the positive terminal first, followed by the negative terminal. If you disconnect the positive terminal first, any contact between the battery and the metal parts of the car body will directly connect the positive and negative terminals, resulting in a short circuit. 2. When removing or installing the battery, always disconnect the negative terminal first and reconnect it last. If you disconnect the positive terminal first, any accidental contact between a metal wrench and the car body during the process can cause a short circuit. 3. Automotive electrical systems are characterized by low voltage, direct current, single-wire configuration, and negative grounding.