The MacBook Charger USB C Power Adapter boasts an exceptional charging efficiency of up to 99%, ensuring rapid power replenishment. With its stable output current, it swiftly caters to your charging requirements,regardless of the location or scenario, ensuring the fastest possible charging experience.If your laptop cannot be charged even when plugged in,please carefully check the charging port and pins to ensure that the cable is firmly connected to the adapter block [Superior Standard & Time-Saving]The 96W MacBook Pro Charger powerful connect, built-in multi safeguards and cooling system to protect against overcharging, short circuiting, overheating, spark, reduce battery aging, extend battery life.Be aware that if your laptop is running an extremely outdated BIOS version,you may encounter difficulties in correctly identifying the AC adapter,which could lead to charging issues.In this case,the solution is to update the system BIOS