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1. It can be charged fast. Whether the fast charge depends on the mobile phone charger, charging cable and mobile phone model, if the 3 can match, it can smoothly enter the fast charge.
2. The power of the mobile phone charging depends on the communication of the mobile phone and the charger through the charging wire, and the replacement of the battery does not hinder this communication, so you can still enter the fast charge, if the replacement battery is the original battery, there is no problem in normal use, if it is not the original battery, the use of fast charge will have some no risk, Now support fast charge mobile phone batteries are customized to withstand a large charge and discharge current, while conventional batteries can not withstand a large charge and discharge current, conventional batteries with large current charge and discharge will be very serious, and even fire and explosion.
The mobile phone can continue to fast charge after replacing the battery, and the mobile phone fast charge has not much to do with the battery; Usually support mobile phone fast charging will have a fast charging small module inside, and as long as your charger is fast charging and then connected with this mobile phone will automatically activate the fast charging mode. This is basically something that very few people will see and very few people will understand, it's a fully automatic thing.
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The fast charge is supported by the charger and the phone data cable, which has nothing to do with the battery.
If Xiaomi does not charge quickly after changing the battery, it may be a charging line problem or a battery problem. If the problem is the charger, it is recommended to replace it.
If it is a battery problem, Xiaomi battery only the original battery cell supports fast charging, and other batteries do not support it.