OPPO VOOC aka OnePlus Warp Charge or what is the cost of fast charging of modern smartphones

I think it's time to look at the VOOC standard, aka Warp Charge, which “flagship killer” of the latest generation OnePlus 8 Pro uses to charge and all of its predecessors, as well as many smartphones from the Chinese manufacturer Oppo, regardless of the chipset used. If it seems to you that OnePlus and Oppo occupy a marginal niche and they are not worth talking about in details, but only to mention, please take a look at this article:
Global smartphone market
Source: Tadviser, 06/17/2020
Despite the fact that OPPO and Vivo are owned by BBK Electronics, the company uses its own VOOC fast charging technology only in smartphones under the Oppo and OnePlus brands. But 8.3% of the total market is a lot.
Here is a good, though very superficial review-comparison of charging speed with the participation of VOOC - link #1, link #2, link #3

 The History Behind VOOC - link
I will note the following points.
VOOC technology first appeared in 2014 in Oppo Find 7 smartphones, as well as devices of the F, N and R series. Unlike its main competitor, Qualcomm Quick Charge 2.0, Oppo VOOC technology is based not on increasing the voltage, but on supplying a higher current - up to 4 A in its first version. The essence of the technology lies in the parallel charging of a two-cell battery, which allows to reduce the charging time at least by half without overheating the battery. In addition, some circuits that control the charging process have been moved from the smartphone's power controller to the charger, which, according to the manufacturer, partially transfers heat irradiation from the controller that is built into the phone to an external charger.
So far so good? Well, yes, but the question arises. At least one problem is already noticeable: the protection and control of the charge absolutely cannot be completely "transferred" from the phone to the external charger; you need to duplicate defense mechanisms. Let's see what happens otherwise.
OPPO engineers are well aware that transferring part of the control and protective mechanisms from the smartphone to the outside (into the charger) dramatically reduces the safety margin of the device. More or less safely, this technology will work if and only if we are fully confident in the quality of all components of the chain. You will need an exceptionally high-quality charger, a USB cable that is capable of transmitting high currents, and an exceptionally high-quality battery. It is clear that there is no way to give control over the production of cables to outsourcing: an attempt to supply a current of 6 A to a regular cable with a USB-A connector at one end (namely, such cables are used by Oppo) with a guarantee will lead to dangerous overheating of the cable and connector that are not designed for such current. It is also clear that the production of chargers and batteries cannot be outsourced either.
So - back to the future, from a million standard accessories - to proprietary USB cables, without which the magic of fast charging won't work! And if the Oppo Find 7 used a micro USB connector for charging with an extended plug and an increased number of contacts (by the way, this cable was a continuation of the charger, it was impossible to buy it separately), then the OnePlus 5 bundle includes an unremarkable USB charger and ORDINARY-LOOKING cord with USB-C on one end and USB-A on the other.
They are ordinary only in appearance. OnePlus cables are in serious violations of the USB Type-C 1.2 standard; they are not safe to use to charge other gadgets. But if you want your OPPO or OnePlus phone to be charged at maximum speed according to the VOOC / DASH Charge / Warp Charge standard, you will have to use the manufacturer's charger and cable. Want a quick charge at work, in the car or on the go? None of the existing third-party chargers will help here: you will have to purchase an additional set of charger + cable from the smartphone manufacturer. In doing so, you must always bear in mind that it can be dangerous to use the same cable to charge other devices.

And what will happen if you still try to charge your smartphone from OPPO or OnePlus with a third-party charger or from a "native" charger, but with a different cable?
It will not burn, will be charged, but will work in standard mode. The maximum charging current that the phone will take from standard cables and chargers is only 1.5 A (it may vary depending on the device that is being charged (smartphone) and which is charging (charger)).
Thus, the main difference of VOOC / DASH Charge / Warp Charge technology from competitors is in serious violations of USB-IF standards and maximum incompatibility of everything with everything (and in both directions). The advantages of the technology - a fairly high charging speed and relatively low overheating - are simply lost in the background of total incompatibility with existing accessories and the potential danger associated with the transfer of some circuits from the phone to the charger.

How does regular fast charging work?
After turning on the smartphone, it will be quickly charged from the charger and will charge at a voltage of about 9 V / 2 A at 0-50% battery charge for about half an hour. After that, it will hold the voltage at 9 V while the current will slowly drop to 0 A until it reaches about 75% of the battery level. Then, in the final stage, the charging voltage drops to 5 V and the current rises to 2 A and slowly drops to 0 A until charging is complete.
Today, there is no consensus on how harmful fast charging is. Some users argue that this mode has little or no effect on battery wear, while others disagree. In any case, it is not recommended to use fast charging very often.
Why do manufacturers integrate protection systems into their chargers? First of all, to protect your gadgets from users’ mistakes and ignorance of technologies and compatibility, low-quality third-party chargers, low-quality wires and the consequences of their use, and thereby tie the client to their product line, guaranteeing product quality, but with a number of limitations.

Our charger, USB C Car Charger, Dual Port with Power Delivery and Oppo VOOC, was released three years ago.
Built on the basis of two IP6510 & IP6518 chips, supports 13 fast charge output standards.
It is compatible with OPPO VOOC ver.1.0 (pseudo OPPO VOOC).
Our charger does not support the latest OPPO fast charging protocols and gives:
The USB Type-A connector only has 5 volts at a current of 4 amperes maximum, i.e. 5 x 4 = 20 watts maximum. It is compatible with OPPO VOOC protocol ver.1.0.
The USB Type-C connector only has 5 volts at a current of 3 amperes maximum, i.e. 5 x 3 = 15 watts maximum. It is compatible with USB Power Delivery protocol.
So using original or certified cables with our charger will lead to nothing, there will be no fast charging, despite the similarity of technical characteristics.
We cannot guarantee fast charging for recently released smartphones (from early 2019).

For example: OnePlus 7 Pro smartphone, got support (new technology) of fast charging of Warp Charge 30 and 30W charger in the box.
That is to say, the charger provides 5 volts at a maximum of 6 amps, i.e. 5 x 6 = 30 watts maximum. This is FOUR times higher than standard chargers.
And I have not yet touched on the questions:
  • compatibility of the charger within the VOOC protocol
  • power capacity of the charger
  • additional contact in the connector
  • heat dissipation of the smartphone and charger
  • battery life
There is no compatibility with smartphones from the company OPPO, OnePlus in our product descriptions, but the customer sees OPPO VOOC and three times lower price.
What is he doing? That's right, he buys without sorting it out. What then? And then the expenses for sending the goods to the customer, for returning the goods, for refunds to the customer, receiving the goods back, checking, repackaging, sending to the warehouse, warehouse expenses, outraged one-star customer review, dissatisfaction with the purchase, bad seller and brand, tons of unnecessary fuss.
What does all this mean for the seller? That's right, money. And who is to blame for what happened? That's right, the customer, because he didn't understand the vicissitudes of marketing. What does the next customer get? That's right, a higher price for the product. What then? Then running in a circle, read from the beginning of the paragraph.
  • The VOOC ver.1.0 charging protocol is not compatible with the higher level of the VOOC protocol, and even more so with Warp Charge, despite the similar technical characteristics (there is backward compatibility).
  • Protection systems and power management systems are integrated into the charger (only original charger).
  • Additional contact in the connector (only original cable).
  • Dual cell battery in smartphone (for faster charging).
  • Do you want to save? (original chargers are very expensive), not worth it.
  • Today, when buying a smartphone, you bind yourself to all accessories of this manufacturer (forget about accessories from third manufacturers).
  • Want a quick charge at work, in the car or on the go? Fast charging of the smartphones Oppo or OnePlus is only for an additional fee.
And what will you choose - compatibility + safety or fast charging, regardless of the brand ???
Well, if you found $1000 on a smartphone, fell for the marketing moves of the manufacturer, please add $100 for accessories, don't be miser, help the Chinese people get off their knees.

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