Normal mobile phone chargers are well matched, because the mobile phone battery has a certain voltage resistance, exceeding the rated power, although the charging speed is fast, but the battery is easy to heat, bulge, the temperature is too high and the explosion, so choose 55 watts and 30 watts charger, be sure to first look at your mobile phone charging acceptance, whether it is a fast charger, suitable to choose 55 watts, 55 watts charge faster than 30 watts
The protocols are different, the technology is different. The power is 30W
One uses low voltage and high current, less heat production, and can maintain high current and high efficiency during charging.