The phone supports 50W wireless fast charge, with a 20W charger, the actual charging power is only 20W.
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When your phone supports a fast charge of less than 50W, at this time with a 20W charger, the actual charging power is less than 50W. For example, Xiaomi 11 supports 55W wired fast charge and 50W wireless fast charge. At this time, obviously with 55W wired charger will be faster.
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Therefore, choose the charger to see the following points:
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1. The phone supports the highest charging power.
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2. Charging protocol and output power of the charging head.
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3. Data line interface and support the size of the incoming current.
cannot
Does not support 50w fast charging mobile phones can not be charged with 20w fast charging head
All mobile phones come with 5w, 10w universal charging mode, and then the fast charging technology of each family. Your 20w fast charge with 50w fast charge head because the fast charge technology is different, it can not be connected, and it will directly reduce you to 10w universal charge. So don't even think about charging it, just charge it