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Charging power is max infuence on charging speed.
When charging the Samsung S25, an 18W fast charger is significantly faster than a 5V ordinary mobile charger. The difference in wattage directly affects the charging speed.
An 18W fast charger provides more power, allowing the device to charge at a higher rate. On the other hand, a 5V ordinary charger typically outputs less power, resulting in slower charging times. Using an 18W fast charger can potentially charge your Samsung S25 around 2-3 times faster compared to a 5V ordinary mobile charger.
Calcualte Way
Aboug 5V mobile charger, In market, 5V1A, 5V2A, 5V3A, etc. Generally speaking, 5V1A and 5V2A are ordinary and usual, 5W and 10W power for charging. So 18W about 2-3 times than 5V charger.
