Why is oppor9 mobile phone charging less and less with other chargers?

OPPOR9 mobile phone supports the use of other chargers.

OPPOR9 mobile phone supports fast charging, but it needs its own data cable and charger. In addition, R9 can also be charged with an ordinary charger, but the charging speed is based on the output current of the ordinary mobile phone charger, which will be slower.

OPPO mobile phone vooc flash principle:

VOOC flash charging adds an MCU flash core to the adapter, which realizes the voltage open-loop and segmented constant current technology. VOOC flash charging innovatively changed the circuit topology, increased the charging current and increased the charging speed by more than 4 times without changing the charging voltage.

Advantages: OPPO VOOC flash charging uses the standard charging voltage of mobile phone to charge, which is in line with the voltage receiving range of mobile phone battery. The current can be directly charged into the battery without voltage conversion, so the charging efficiency can reach 97%. However, high-voltage fast charging needs to reduce the voltage to charge the battery, so it will produce greater energy loss, and the charging efficiency is only about 85%. Therefore, VOOC flash charging has better charging efficiency than other flash charging. In addition, due to the improvement of charging efficiency, the charging temperature will be lower than that of high-voltage charging mobile phones.