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The OPPO VOOC (Voltage Open Loop Multi-step Constant-Current Charging) Flash Charging system is a proprietary rapid-charge technology created by OPPO Electronics, which, at present, is able to charge certain OPPO devices from 0 to 75% in just 30 minutes. In contrast to Qualcomm's QuickCharge technology increasing the voltage during fast charging, VOOC uses a higher current than normal USB 2.0 charging. Thus, VOOC operates at 5V and 4A. For transferring higher currents of 4A, VOOC requires both a special wall adapter and special cables. The VOOC Flash Charge circuit technology reportedly lowers the temperature of the charging adapter, and creates an interface from the adapter to the phone, which improves the speed and safety of the charge.
At present, the following devices are compatible with VOOC Flash Charge:
- OPPO F9 Pro
- OPPO F9
- OPPO Find X
- OPPO F3 Plus
- OPPO R15
- OPPO R15 Pro
- OPPO R17 Pro
- OPPO R11s Plus
- OPPO R11s
- OPPO R11 Plus
- OPPO R11
- OPPO R9s Plus
- OPPO R9s
- OPPO R9 Plus
- OPPO R9
- OPPO F1 Plus
- OPPO R7 Plus
- OPPO R7s
- OPPO R7
- OPPO R5
- OPPO N3
- OPPO Find 7
- OPPO Find 7a
- OPPO A3s
OnePlus' Dash Charge
Since VOOC is a proprietary technology, only OPPO devices officially support it. But OPPO has internally licensed VOOC to OnePlus another brand of its holding company BBK Electronics, which markets the same technology as Dash Charge. Currently, Dash Charge is supported by the OnePlus 3, 3T, 5, 5T, 6 and 6T, claiming to charge "a day's power in half an hour".
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