How to Remove Car Battery Cables?
2 Answers
The method to remove car battery cables is: 1. Confirm the battery location; 2. Prepare disassembly tools; 3. Use a wrench to loosen the screw on the negative terminal post of the battery, then twist the negative terminal left and right by hand to remove it. The functions of the battery are: 1. To supply power to the starting system, ignition system, and electronic fuel injection system during engine startup; 2. To provide power to the vehicle's electrical equipment when the engine is stopped or at low idle; 3. The car battery acts as a voltage stabilizer for the entire vehicle's electrical system; 4. The car battery can store excess electrical energy generated by the alternator. The maintenance methods for car batteries are: 1. Clean the accumulated white acid corrosion powder on the battery terminals to extend service life; 2. Add distilled water to the middle between the upper and lower level marks; 3. Check whether the battery is charging normally.
When handling car battery cables, I usually follow a sequence to avoid short circuits. First, use a wrench to loosen the negative terminal, which is usually black or marked with a "-" sign. Don't rush to remove it—wait a few seconds to let the system discharge. Then, proceed with the positive terminal, which is red or marked with a "+". Always wear gloves and goggles throughout the process to prevent battery acid splashes. Choose the right wrench size for the job, and avoid using iron pliers or working with wet hands to prevent sparks or electric shocks. After removal, clean any rust on the terminals with vinegar and a wire brush to prevent corrosion from affecting future connections. Why remove the negative terminal first? Because the car body acts as the ground—touching the positive terminal first with a tool against metal can cause a short circuit, blowing fuses or damaging computer modules. When reinstalling, reverse the order: tighten the positive terminal first, then the negative. Regular battery maintenance can extend its lifespan.
