OPPO VOOC, SuperVOOC (SVOOC). OnePlus Dash Charge/Warp Charge. Realme SuperDart/UltraDart Charge

VOOC stands for Voltage Open Loop Multi-step Constant-Current Charging. It is a proprietary fast-charging technology introduced by OPPO in 2014.

SuperVOOC 2.0 was introduced in 2019 with a charging power of 65W.

The technology is used in mobile devices from OPPO, OnePlus, and Realme.

Unlike high-voltage/low-current schemes such as QC or PE, VOOC supplies current directly from the charger to the phone battery at a relatively low voltage (5V or lower), eliminating the need for internal high-to-low voltage conversion within the phone (the built-in lithium-ion battery voltage is typically around 4.2~4.4V). This improves efficiency and reduces heat generation compared with other fast-charging protocols. VOOC also often uses real-time temperature sensors, which can improve charging safety.

OPPO increased the contact area of the USB interface and used dedicated chargers to enable high-current fast charging.

VOOC and SuperVOOC.

Both fast-charging technologies use the same basic low-voltage, high-current approach. SuperVOOC is generally more advanced, using higher-end components, charging algorithms, two batteries connected in series, and additional chips and sensors. From a marketing perspective, SuperVOOC is positioned as a solution for top-tier smartphones.

VOOC and SuperVOOC require a compatible adapter and cable.

In July 2020, OPPO introduced 125W fast-charging technology. It supports the main charging protocols: 125W PPS, 65W PD, 65W SuperVOOC, 30W VOOC, and 36W QC. It also supports charging from the adapter to the smartphone at up to 20V/6.25A, which is converted to 10V/12.5A inside the smartphone to charge the battery. Temperature sensors were also added to improve charging safety. High-current charging requires improved battery cells with low internal resistance that can handle charging at up to 6C (12.5A), connected in series (2S). The USB connector was also improved to withstand this current level.

SuperVOOC 150W Flash charge/UltraDart. 20V/7.5A from the charger is converted to 10V/15A inside the smartphone and then split into 5V/15A for each of the two batteries. The charger is compatible with PD and PPS.

Charging protocols:

Notes:

OPPO VOOC, OnePlus Dash/Warp, and Realme SuperDart/UltraDart belong to the VOOC family. Accessories from these three brands are mutually compatible, although this is not guaranteed for future generations.
SuperVOOC 1.0 chargers can charge VOOC/Dash/Warp30 devices, but at no more than half speed because the SuperVOOC design assumes two batteries in the smartphone, while VOOC/Warp-compatible smartphones have only one battery.
Some OPPO smartphones are capable of using USB PD chargers.
Early SuperVOOC chargers did not charge other devices using alternative protocols such as USB PD, but recent SuperVOOC adapters with USB-C also support QC, PD, PPS, and UFCS.
SuperVOOC has an alternative implementation based on PPS, known as SuperVOOC PPS. It requires a 5A-rated cable, including a non-branded one, and can exceed 65W, although its maximum power is lower than that of classic SuperVOOC.
SuperVOOC charging cables are backward compatible with older generations of the technology (VOOC, Dash, Warp).
Proprietary SuperVOOC USB-A - USB-C cables have an additional signal pin on the USB-A side and larger contacts for high-current transfer, up to 9.1A.
Realme announced 320W Supersonic fast-charging technology, but 320W charging is implemented through UFCS rather than SuperVOOC.
Realme 120W (1A) charger, model VCBBOACH, supports SVOOC 120W (3.3-5V6A, 5-11V10.95A) with the original 12A-rated USB-A - USB-C cable.
OnePlus 100W (1A) charger, model VCBAOBCH, supports SVOOC 100W (5-11V9.1A) at 230V and 80W (5-11V7.3A) at 110V with the original 10A-rated USB-A - USB-C cable.
OnePlus 80W (1A) charger, model VCBBJAEH, supports SVOOC 80W (5-11V7.3A) with the original 10A-rated USB-A - USB-C cable.
OnePlus 120W 1C1A USB charger supports several fast-charging protocols, including PD, PPS, and QC.
At least up to and including the OnePlus 8T, OnePlus smartphones can trigger fast charging only via VOOC/SuperVOOC; other fast-charging protocols are not supported.