VOOC

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Oppo VOOC (Voltage Open Loop Multi-step Constant-Current Charging), also known as Dash Charge or Warp Charge on OnePlus devices and Dart Charge on Realme devices, is a proprietary rapid-charge technology created by BBK Electronics .[1] In contrast to USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC uses a higher current than normal USB 2.0 charging; VOOC operates at 5 volts and 4 amperes to match the internal battery voltage, which removes the need of regulating the voltage inside the mobile phone, which would produce additional unwanted heat.[2] 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, OPPO claims, improves the speed and safety of the charge.[3]

VOOC 2.0 has been licensed to OnePlus as the Dash Charge technology.[4] A single-cell, 30-watt (5 V/6 A) version of VOOC 4.0 has also been licensed to OnePlus as Warp Charge.[5] OnePlus does not market its phones as VOOC-compatible despite the fact that VOOC 2.0 and Dash are compatible.[4] In June 2019 Vivo teased Super FlashCharge technology capable of up to 120W charging.[6]

As of July 2019, VOOC has been licensed to 14 other corporations, most of which are in the phone charging and power strip industries. Oppo claims that more than 1000 patents around VOOC have been filed worldwide.[7]

Versions[edit]

As of 2020, VOOC / SuperVOOC comes in five variations:

  • VOOC 2.0, which operates at 5 V/4 A.
  • VOOC 3.0 (2019), a technology that claims to be 23.8% faster than VOOC and "based on a new technology". It appears to be a 5 V/5 A version of VOOC. VOOC, v3.0: 55 % in 30 minutes.[8]
  • SuperVOOC (2018), a successor of VOOC 2.0 with 10 V/5 A (50W). It charges a two-cell battery in series.[9]
  • VOOC 4.0 (2020), a successor of VOOC 3.0, which operates at 5 V/6 A (30 W). VOOC, v4.0: 67 % in 30 minutes.
  • SuperVOOC 2.0 (2020), a successor of Super VOOC with 10 V/6.5 A (65 W).

Devices[edit]

Dash Charge for OnePlus 5
  • VOOC 2.0 is supported by OPPO R6 through Oppo R15, by F1 (Find 1) Plus through Find X, Realme 3 Pro, Realme X, and Oppo N3.[10][11][12]
    • OnePlus devices since OnePlus 3 (3, 3T, 5, 5T, 6, 6T, 7) support Dash Charge, claiming to charge "a day's power in half an hour".[13]
  • VOOC 3.0 is supported by Oppo F11, Oppo Reno series, Realme 5 Pro, Oppo F-15 . [8]
  • SuperVOOC is supported by the Oppo Find X, OPPO R17 Pro and Realme X2 Pro.[9]
  • VOOC 4.0 is supported by Realme 6.
    • Warp Charge is supported by the OnePlus 6T McLaren, 7 Pro and 7T series[5] and OnePlus 8 series[14].
  • SuperVOOC 2.0 (2020) is supported by OPPO Find X2, OPPO Reno 4 Pro.
    • New warp charge coming to 8T series

All models reported include the "s" (or OnePlus "T"), "Plus", and "Pro" variants.

Oppo's mobile DAC, Oppo H1-2SE, also features VOOC charging.

Technology[edit]

All versions of VOOC require a proprietary cable to work.[15] In addition to electrical requirements like thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the (USB-A to USB-C) cable to communicate through.[16] Without such communication, the charger runs at a limit of 5 V/1.5 A.[17] From VOOC 4.0 this limit elevated to 5V/2.0A.[18]

On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS.[19] The firmware code for PIC16F microcontrollers on the "VOOC IC" is also defined in the code.[20][21] There is some rudimentary documentation provided by OnePlus, which mentions a BQ27541 battery gauge chip made by Texas Instruments, with Dash-specific protocol extensions.[22] The source code allows a list of parts used for the technology to be made: for example, the Find X uses a pic1508/stm8s chip on the adapter and a bq25882 two-cell charger chip on the phone. The BQ27541 gauge is exchanged for a BQ28Z610 gauge which can handle two-cell battery packs.[20]

Marketing[edit]

OnePlus has recognised the weakness of many other mobile phones with fast charging technology to significantly slow down the charging speed during operation of the device, using it as an opportunity to promote Dash Charge enabled devices, which do not throttle the input power during operation.[23][24]

Other charging technologies[edit]

References[edit]

  1. ^ https://wccftech.com/oppo-super-vooc-fast-charging-explained/%7Ctitle=Oppo Super VOOC Fast-Charging Explained|access-date=6 March 2020
  2. ^ "VOOC fast charging - everything you need to know". Android Authority. 2016-04-23. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  3. ^ Martin, Taylor (2014-05-20). "Every smartphone needs rapid charging". Pocketnow. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  4. ^ a b "Dash Charge for OnePlus 3 explained". Android Central. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  5. ^ a b "All you need to know about OnePlus' 30W Warp Charge standard". Android Central. 24 May 2019. Archived from the original on 2 June 2019. Retrieved 2 June 2019.
  6. ^ Byford, Sam (2019-06-20). "Vivo's Super FlashCharge tech fills a 4,000mAh phone in 13 minutes". The Verge. Archived from the original on 2019-08-20. Retrieved 2019-08-20.
  7. ^ "OPPO与八家企业签署VOOC闪充专利许可协议 - oppo 欧珀手机". cnBeta (in Chinese). Archived from the original on 29 July 2019. Retrieved 30 July 2019.
  8. ^ a b John, Jed (22 March 2019). "OPPO Reno comes with VOOC 3.0 which improves fast charging speed by 23.8%". Gizmochina. Archived from the original on 1 June 2019. Retrieved 2 June 2019.
  9. ^ a b Byford, Sam (10 October 2018). "Oppo has the fastest fast charging we've ever seen". The Verge. Archived from the original on 2 June 2019. Retrieved 2 June 2019.
  10. ^ "OPPO VOOC Flash Charge, Quick Charge - OPPO Global - OPPO Global". www.oppo.com. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  11. ^ "Oppo A3s is official with 4,230 mAh battery and 6.2-inch notched display". xda-developers. 2018-07-13. Archived from the original on 2020-01-24. Retrieved 2018-07-14.
  12. ^ "OPPO R11 support VOOC Flash Charge". www.oppo.com. Archived from the original on 2017-06-13. Retrieved 2017-06-10.
  13. ^ "OnePlus 3T". oneplus.net. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  14. ^ "Specs | OnePlus 8". Retrieved 21 July 2020.
  15. ^ "If your OPPO phone won't flash charge". OPPO Global. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  16. ^ sbooth. "What is the OnePlus 3 DASH charging/sync cable doing internally?? Let's probe it!". OnePlus Community. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  17. ^ "Dash Charge protocol analysis". XDA Developers. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  18. ^ "Oppo VOOC fast charging limits without vooc chargers". deathline.net. Archived from the original on 2020-10-10. Retrieved 2020-10-10.
  19. ^ "drivers/power/oppo in LineageOS/android_kernel_oppo_msm8974". GitHub. LineageOS. 29 May 2019.
  20. ^ a b "drivers/power/oppo in oppo-source/FindX-8.1-kernel-source". GitHub. 24 May 2019. Retrieved 2 June 2019.
  21. ^ "oneplus_fastcg.c in OnePlusOSS/android_kernel_oneplus_msm8998 (branch 5T)". GitHub. OnePlus Open Source Software. 2 June 2019. Retrieved 2 June 2019.
  22. ^ "oneplus_fastcg.txt in OnePlusOSS/android_kernel_oneplus_msm8998". GitHub.
  23. ^ "Video of the OnePlus 5T charging with screen on, in comparison to the iPhone 8 Plus, Galaxy S8 Plus and Google Pixel 2 XL". Archived from the original on 2018-05-10. Retrieved 2020-07-04.
  24. ^ [https://web.archive.org/web/20170906010029/https://www.youtube.com/watch?v=JAy6uRtZcwY Archived 2017-09-06 at the Wayback Machine OnePlus 3T charging speed comparison with Google Pixel XL during commute in car (uploaded January 26th 2017)