OPPO VOOC Flash charge VOOC flash charge is up to 4 times faster than traditional charging. 30 minutes can be charged to 75% of the 3000mAh battery, and 10 minutes can talk for two hours. OPPO's VOOC flash charge is the use of low voltage and high current mode, to ensure the charging speed, but also to reduce the heat of the adapter and mobile phone when charging. OPPO has customized a full set of IC devices from upstream suppliers. The MCU single-chip microcomputer was used for the first time to replace the step-down circuit in the traditional charging circuit. The intelligent MCU management chip can automatically identify whether the current charging device supports VOOC flash charging. If supported, the phased current output will be achieved by segmental cross-flow; If it is detected that it is not supported, it automatically uses the stable charging current to achieve slow charging. Of course, even if it is fast charging, but in the later period of time, the charging speed of the full sprint will always slow down, that is, the trickle charging is designed to prevent the battery from overcharging and prevent other safety side effects. Qualcomm Quick Charge 2.0 adopts a new specification on the basis of Quick Charge 1.0, and Qualcomm this time adopts the principle of increasing voltage and current. It increases the charging voltage from 5V to 9V, and the charging current surges from 1A to 1.6A. And according to the actual case given by Qualcomm, the second generation of Quick Charge technology can charge 60% of the electricity in 30 minutes for a smartphone with a battery capacity of 3300mAH. In terms of technology, Quick Charge 2.0 also requires the use of chargers with special chips. In order to prevent the old version of the mobile phone from being burned by too much current when charging, a special IC judge switch needs to be added to the charger. This is handled in the same way as OPPO.