Purple meter 30w and 33w double-port charging head comparison: mobile phone charger 30W fast charging parameter is 5V6a5x6=30W. The 33W fast charge parameter is 5V6.6a5x6.6=33W.
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There are two general directions to improve the charging speed: one is to increase the voltage, and the other is to increase the current. Increasing the voltage will increase the heat generated during charging, accelerate battery aging and may bring safety risks, so the actual effect is not good. By contrast, raising the current is more realistic. VOOC flash charging technology adopts low voltage and high current mode to ensure the safety of charging process.