The difference between Huawei's 20-watt fast charge and 22.5-watt fast charge is the difference in charging power. The 20-watt fast charge is faster than the traditional 5-watt charge, which can charge the phone faster and save charging time. The 22.5-watt fast charge is faster than the 20-watt fast charge, which can charge the phone more quickly and provide higher charging efficiency. Therefore, the 22.5 watt fast charge can charge the phone faster than the 20 watt fast charge, so that users can get electricity faster and improve the use experience.