The electrical Connector Pin needs to be effectively protected during operation to ensure the safe operation of the circuit. Protection measures include waterproofing, dustproofing, and corrosion resistance. Waterproofing can prevent moisture from entering the Charger Pin and causing a short circuit, which is usually achieved by sealing gaskets, potting glue, etc. Dustproofing can prevent dust accumulation from affecting contact performance, which can be solved by installing a protective cover or filter. Corrosion resistance is essential for electrical Connector Pin working in harsh environments. The use of corrosion-resistant materials or surface coating can extend their service life. In addition, attention should be paid to the insulation performance of the electrical Connector Pin to avoid leakage and electric shock accidents. Regular inspection and maintenance of protection measures and timely detection and treatment of potential safety hazards are the keys to ensuring the safe operation of the electrical Connector Pin.