OPPO VOOC, SuperVOOC (SVOOC). OnePlus DASH/WARP charge. Realme SuperDart/UltraDart Charge
VOOC stands for Voltage Open Loop Multi-step Constant-Current Charging. It is a proprietary fast-charging method released in 2014 by Oppo.
The technology is used in brands of mobile products under the umbrella of its parent company, BBK Electronics. (OPPO, OnePlus, Realme)
Unlike high-voltage/low-current schemes (QC or PE, for example), the VOOC series has consistently used a low-voltage, high-current fast charging approach. The core of VOOC is to input current directly from the charger into the phone's battery at a relatively low voltage (5V or lower), eliminating the need for internal high-to-low voltage conversion within the phone (the voltage of the built-in lithium-ion battery in the phone is generally around 4.2~4.4V). This process enhances efficiency and reduces heat generation (in comparison with other fast charging protocols). Additionally, VOOC often incorporates real-time temperature sensors, making it more advantageous in terms of safety.
OPPO increased the contact pins of the Micro USB interface and used custom chargers to implement high-current fast charging.
VOOC and SuperVOOC require a compatible adapter and a cable.
VOOC vs SuperVOOC.
Both fast charge technologies have a common idea of low voltage-high current and a common solution, however, SuperVOOC is usually more advanced, relying on top-notch components, charging algorithms, charging 2 batteries in a series approach, and additional chips and sensors. From a marketing standpoint, SuperVOOC is positioned as a solution for top-tier smartphones.
OPPO, in July 2020, introduced a 125W Flash Charger. It supports the charging mainstream protocols of 125W PPS, 65W PD, 65W SuperVOOC, 30W VOOC, and 36W QC. It also supports a charging scheme from adapter to smartphone up to 20V/6.25A, which is converted to 10V/12.5A in the smartphone in order to charge a battery. The technology also added temperature sensors to enhance safety protection during the charging time. High current charging requires using improved battery cells with low internal resistance, which can handle up to 6C charge (12.5A) connected in a sequence (2S formation). The USB connector has been improved in order to withstand such a current level.
SuperVOOC 150W Flash charge/UltraDart. 20V/7.5A from charger converted to 10V/15A in smartphone and then split by 5V15A between 2 batteries in smartphone. Charger is compatible with PD and PPS protocols.
Charging protocols:
Note:
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OPPO VOOC, OnePlus (DASH), and Realme all belong to the VOOC series, and accessories from these three brands are mutually and downward compatible, however, it's not guaranteed in the future.
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SuperVOOC 1.0 chargers may charge VOOC/Dash/Warp30 devices, but no more than half of the speed, as SuperVOOC design is supposed to have 2 batteries in a smartphone, and VOOC/Warp compatible smartphones have only one cell battery.
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Some OPPO smartphones are capable of using USB PD chargers.
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SuperVOOC charges at the beginning are not compatible with alternative charging protocols like USB PD, but lately modern versions of SuperVOOC UsbC chargers also support popular standards like QC, PD, PPS, and UFCS.
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SuperVOOC has an alternative implementation based on PPS, known as SuperVOOC PPS. It requires a 5A-rated cable (including non-branded ones) and can reach a power output of >65W, although this is lower than the classic SuperVOOC.
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SuperVOOC charging cables are backward compatible with older technology generations (VOOC, Dash, Warp)
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SuperVOOC UsbA-UsbC proprietary cables have an additional signal pin on the UsbA side and larger pins for high current transfer (up to 9.1A).
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Realme announced Supersonic fast charging technology with 320w charging speed, however, it is based not on SuperVOOC but on UFCS charging technology.
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USB charger realme 120W (1A) model VCBBOACH supports SVOOC 120W(3.3-5V6A,5-11V10.95A) with original 12A-rated UsbA-UsbC cable.
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USB charger OnePlus 120W 1C1A supports a few fast charging protocols, including PD, PPS, and QC.
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Smartphones, at least before and including OnePlus 8T can only trigger fast charging using VOOC/SuperVOOC, not any other fast charging protocol supported.