25w fast charge is 5 watts faster than 20w
The difference between 20w fast charge and 25w: the maximum current is different, the charging speed is different, and the charging power is different.
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Because their w number is not the same, the larger the w number, the greater the charging speed power.
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In today's daily life, everyone is pursuing a high-speed life, and the charging speed of mobile phones should also be accelerated. Dozens of work calls a day, four or five conference calls, and the occasional phone call. 25 fast charge, 50% charge in 5-10 minutes, which greatly improves the mobile phone experience.
Assuming the phone has a 3800 mah battery, 25w can be fully charged in 75 minutes, and 20w takes 85 to 90 minutes to be fully charged.