It is recommended to replace the battery in a professional repair store, although the voltage of the car battery is not high, but it is still dangerous.
1.1 Park the vehicle in an open area. And ensure that the road surface is smooth, less traffic, away from traffic, sparks, open flames or water in a safe workplace. Make sure the vehicle is in P gear and pull down the handbrake, turn off the ignition switch and remove the key.
1.2 Check safety equipment. Check that safety equipment is not damaged and wear (helmet, goggles, insulated shoes, insulated gloves, overalls), remove any metal jewellery you are wearing to protect yourself from electric shock. You can also pull guard rails if you can and open the hood.
1.3 Find the battery. Locate the battery in a corner of the engine compartment, near the windshield or front bumper on either side of the car.
1.4 Disconnect the negative terminal first, then use cable ties to hold it in place. Be sure to remove the negative terminal marked with a plus sign (-) first, then the positive terminal to prevent a short circuit. Use a wrench or pliers to loosen the nut or bolt securing the negative cable to the Terminal. Once the nut or bolt is loosened, gently twist and pull the cable out of the Terminal. Do not allow the cable to come in contact with any metal parts. If your battery terminals have quick release clips, the cables can be removed without any tools.
1.5 Next disconnect the positive cable and secure it with a cable tie. The positive terminal is usually red and marked with a plus sign (+). If your vehicle has a plastic cover over the Terminal, remove it, then use a wrench to loosen the positive cable clamp and remove the cable from the Terminal. Use the cable clamp to secure the cable to the engine compartment. Ensure that the positive and negative cables do not touch each other and do not allow them to come into contact with any metalwork as this could cause a dangerous electrical short.
1.6 Remove the battery from the vehicle. Check the bracket that holds the battery in place, then remove all connectors connected to the battery and remove the battery from the vehicle.
2.1 Clean the battery terminals. When replacing the new battery, it is best to clean the battery terminals, which can slow down the rate of terminal corrosion and increase the service life of the battery. Generally use baking soda and water, and then wipe with a cleaning tool, and finally spray anti-corrosion spray or gel on the terminals, which can slow down the corrosion time to the maximum extent.
2.2 Fix the battery and grease the battery terminals (special grease for car batteries). Put the new battery into the tray with the positive battery terminal close to the positive car terminal and cable, and the negative battery terminal close to the negative car terminal and cable. Then apply grease on the battery terminals to prevent corrosion.
2.3 Connect the positive battery terminal. Undo the cable rolling strap fixed to the engine compartment with fixed cables, put the positive cable on the positive terminal, then tighten it with a wrench and cover the battery cover. Make sure that the positive cable and the wrench do not touch other metal objects during installation.
2.4 Connect the negative terminal of the battery. Undo the cable roll strap that is fixed to the engine compartment with the fixed cable, then connect the negative cable to the negative terminal, tighten it with a wrench, and cover the battery cover. Make sure the positive cable and wrench do not touch other metal objects during installation.
2.5 Confirm that the battery is securely installed. Try to move the battery, the battery should be in a stationary state.
2.6 Close the hood and start the vehicle. Check that all tools have been removed from the engine compartment and then close the hood. Start the vehicle and check whether the low voltage system can be used normally.
