Charging your laptop with a charger with slightly higher or lower wattage is generally safe. Most modern laptops are designed with safeguards to regulate the charging process, preventing overcharging or overheating. Using a charger with higher wattage may charge your laptop faster, while a lower-wattage charger will charge it more slowly. Laptops also have current control mechanisms. If a charger provides a higher current, the laptop will only draw what it needs, preventing overloading.