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The Samsung W2020 supports flash Charging, which uses Samsung Adaptive Fast Charging technology to charge your phone in a short amount of time. According to official data, the battery capacity of the W2020 is 2300mAh, and when charging with flash charging, it can be charged to about 50% in 30 minutes. It is recommended to use the original Samsung flash charger to charge, in order to obtain the best charging effect and charging speed.
The Samsung w2020 only supports fast charging. But it doesn't support flash charging.