1. Do not plug the power cord into other ports. Insert and unplug the cable horizontally to prevent loosening. Never hot-plug serial, parallel, or PS/2 interfaces.

　　2. Check capacitors, resistors, and inductors for problems. If capacitors are bulging, replace them promptly to avoid potential hazards. Be careful with the power cord; when winding the laptop power cord, avoid breaking internal cables and creating an open circuit. If the external power supply is not working, try inserting the laptop battery. If the laptop starts normally, the problem is likely with the laptop power cord or power adapter. Use a multimeter to check the laptop power cord to simplify troubleshooting. Do not attempt to open the laptop power adapter casing immediately.

　　3. Protect from strong chemicals: Do not use strong chemicals, cleaning agents, or strong detergents to clean the charger. To remove stains from the charger's exterior, use cotton balls dampened with a small amount of anhydrous alcohol. 4. Waterproof and Moisture-proof: As an electronic product, accidental water damage or prolonged exposure to humid air when not in use can cause varying degrees of corrosion or oxidation to the internal electronic components.

　　5. Drop and Shockproof: A phone charger is actually a fragile component; its internal components cannot withstand impacts.

　　6. Static Electricity Discharge During Cleaning: Clean the charger and charging port regularly. Use a damp cloth or an anti-static cloth for cleaning. Never use a dry cloth! Do not drop, knock, or shake the charger if it is accidentally dropped.

　　7. Cold and Heat Protection: Do not place the charger in excessively hot environments. High temperatures will shorten the lifespan of electronic components, damage the charger, and cause some plastic parts to deform or melt. Do not store the charger in excessively cold environments either. When the charger operates in an excessively cold environment, the internal temperature will rise, causing moisture to form inside the charger and damaging the circuit board.

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