Quick Charge, Fast Charge, Charge Dash, USB PD: Focus on Fast Charge Solutions


Want to know the difference between QuickCharge, Dash, Vooc, Pump Express? This article should help you see more clearly in the jungle of fast charging.

Fast charging is very popular on mobile, and this is normal: it is the workaround found to overcome the lack of evolution of batteries. In order not to put more than 3 hours to recharge these smartphones with a simple charger of 1A with 5W, the manufacturers propose chargers capable of debiting a higher power.
We have already seen devices able to absorb up to 25W, a recharge almost five times faster than the vulgar 1A charger on 5V. Before delving further into the subject of fast charging, let's take a quick look at how electricity and measurement units work in chargers.
If you want to know which charger to choose for your smartphone to take advantage of the fast charge, do not hesitate to consult our guide on this subject.
Read on FrAndroid: Which fast charger to choose for your smartphone Samsung, Huawei, OnePlus, Apple, Nokia or Xiaomi?

Fast chargers
If you take a look at your charger, you can easily calculate its output power, expressed in watts. The chargers in fact specify the intensity of the current (in amperes) and the voltage (in volts) output to the smartphone. To calculate the power of the charger, in watts, it is enough to multiply the intensity by the tension. For example, in the case of a conventional charger capable of delivering a current of 1 ampere on 5 volts, we will be entitled to 5 watts output. On Oppo Vooc chargers that charge 5 amperes on 5 volts, the smartphone will be able to receive 25 watts. What is the point of greater power? Reduce the charging time of smartphones batteries.
To better understand the rest of the article, note that the recharge time of a battery is not linear. Thus, if half of the battery can be recharged in a very short time, the second half – and even more the last percent of it – takes a lot of time to recharge. The fast charge is therefore to send a very large power on the first half of the load, then to finely regulate this power on the second half. This last exercise is the most delicate, so as not to damage the battery.

Quick Charge from Qualcomm
Technical specificities
Current Voltage Max Power
Quick Charge 1.05V2A10W
Quick Charge 2.05 / 9 / 12V1.67 / 2A18W
Quick Charge 3.03,6 to 20V2,5 / 4,6A18W
Quick Charge 4.0 + 3.6 to 20V or 5 / 9V (USB PD) 2.5 / 4.6A or 3A (USB PD) 27W (USB PD)
Historical
In June 2012, Qualcomm acquires Summit Microelectronics, a company specializing in the design of electronic circuits for chargers. In February 2013, was born the standard Quick Charge 1.0 capable of reducing the charging time of compatible smartphones by 40%. For this, it was necessary that smartphones include a special chip. In fact, the standard allowed the use of a 10 watt (5V – 2A) charger with compatible smartphones. Then comes the standard Quick Charge 2.0, this time able to shorten by 75% the charging time of a smartphone with up to 36 watts (12V – 3A). To benefit from an intensity of 3A, it is necessary to have a special Quick Charge charger.

At the end of 2015, Qualcomm launched revision 3 of its Quick Charge standard, again with a decreased cooldown. This time it is possible to use a voltage of 20 volts against 12 volts maximum for Quick Charge 2.0. Qualcomm is going even further by integrating a finer management of the voltage, in steps of 200 mV between 3.6 and 20 V. Previously, a smartphone could only choose four different voltages according to the progress of the load, against now 80 voltages. It is thanks to this finer management of the voltage that the charge is faster, allowing to refine the maximum power delivered to the smartphone on the last minutes of recharging. Qualcomm promises 71% recharge in 30 minutes for a battery with a capacity of 2750 mAh.
Now you can count on Quick Charge 4.0. If it is not yet widely adopted on smartphones, its evolution is interesting. It retains the advances of version 3.0 while offering superior optimization, promising a 20% faster load for 30% more efficient energy management. The INOV algorithm has been revised to better consider the heating of the device and the power supply by adapting dynamically to it. The most important thing to note is that the Quick Charge 4.0 is now compatible with the free standard USB Power Delivery, which promises to make QC4 chargers compatible with any device supporting it.
In 2017, a review of this technology will be launched under the name Quick Charge 4+. This once again improves performance with an advertised load up to 15% faster and up to 30% more efficient for more optimized heating once again. Above all, the temperatures of the block and the smartphone are monitored at the same time. No smartphone currently benefits.

OnePlus Dash Charge
Technical specificities
Current Voltage Max Power
Dash Charge5V4A20W
Warp Charge 305V6A30W
Historical
With its OnePlus 3, the Chinese brand has innovated in fast charging with its home technology Dash. Under this name hides a fast charge that resembles that of Oppo, with a voltage of 5 volts, but an intensity of 4 amps, which ultimately gives a power of 20 watts. Once again, we have the advantage of a low voltage (little heating) with the advantages of a fast charge. On the other hand, as with Oppo, the fast charge Dash requires a special USB cable, again with more pins for charging. OnePlus promises 63% battery capacity of the OnePlus 3 (which is 3000 mAh) in 30 minutes of fast charging.

Since 2018, OnePlus has been forced to abandon the name "Dash Charge" for legal reasons. For the OnePlus 6T McLaren Edition, the brand has gone to the "Warp Charge 30" which offers, as the name suggests, a power of 30W. To do this, OnePlus offers an intensity of 6A and a voltage of 4A.

Oppo VOOC
Technical specificities
Current Voltage Max Power
OPPO VOOC5V5A25W
OPPO Super VOOC5V10A50W
Historical
Oppo has also created its own VOOC fast charging solution. Unlike Qualcomm's solution, Oppo did not choose to increase the voltage, but only the intensity of the current. VOOC can therefore deliver 25 watts, with 5 amperes and 5 volts. The advantage of using 5 volts and not 12 or 20 volts is to prevent the battery from overheating when recharging, and therefore to use without burning the phone. Oppo also uses its own batteries, integrating several cells to optimize the current. Finally, the USB cable used by Oppo is special, since it incorporates more connectors. Oppo announces 30 minutes to recharge 75% of a smartphone battery, of an unknown capacity.

In early 2016, Oppo announced the charge Super VOOC Flash Charge that would recharge in just 15 minutes a 2500 mAh battery. The charger always uses a voltage of 5 volts, but with a pulsed recharge, which allows to vary precisely the total power over the entire charging time. Oppo also says that a brand new battery is used to go with this technology that is not yet available on smartphones.
Finally, in 2018, Oppo inaugurated the Super VOOC on its Oppo Find X, also on the Oppo RX17 Pro. Thanks to its power of 50W, it is possible to reload the Oppo Find X in only half an hour.

Samsung Fast Charge
Technical specificities
Current Voltage Max Power
Samsung Fast Charge5 / 9V2A18W
Historical
At Samsung, there is the Adaptive Charge which plays the role of fast charge. Thus, the charger that comes with the Galaxy S7 can deliver up to 25 watts with 12 volts and 2.1 amps. Once again, Samsung uses Qualcomm's Quick Charge technology as a San Diego engineering engineer told us at CES 2016. According to Samsung, the Adaptive Charge can charge 50% of the Galaxy S7's battery (3000 mAh) in 30 minutes.

Motorola TurboPower
Technical specificities
Current Voltage Max Power
TurboPower 159 / 12V1,2 / 1,67A15W
TurboPower 255/9 / 12V2,15 / 2,85A25W
TurboPower 305V7,7A28,5W
Historical
Motorola also offers its own technology called TurboPower. It seems that it relies in part on the Qualcomm Quick Charge 2.0 standard since the charger is compatible. However, Motorola says its engineers have worked with battery designers to optimize the load. The software part would also be specifically dedicated to the battery, for a better management of the energy during the charge. Most high-end Motorola smartphones come with the TurboPower 25 adapter that achieves a power of 25 watts with 12 volts and 2.15 amps. Motorola announced 1000 mAh of recharge in 15 minutes.
Note that most Motorola smartphones now benefit, even on the entry and mid-range. This is particularly the case of the Moto G6.

MediaTek Pump Express
Technical specificities
Current Voltage Max Power
Pump Express 2.0 + 5 at 20V3 / 4,5A + 15W
Pump Express 3.03 to 6V5A + 25 / 30W
Historical
For its part, MediaTek has developed its own fast charging solution called Pump Express. It can be found in three different versions: Pump Express Plus, Pump Express Plus 2.0 and Pump Express 3.0. This latest revision should be available within smartphones by the end of the year. It is reserved for smartphones equipped with a USB Type-C connector with an output voltage of 3 to 6 volts (in steps of 10 to 20 mv) and an intensity that can exceed 5 amperes. It can therefore go up to 30 watts, with low heating thanks to the low voltage. MediaTek announces 75% recharge in just 20 minutes for a battery capacity of 2060 mAh against 30 minutes for the standard Pump Express 2.0.

USB Power Delivery
Technical specificities
Current Voltage Max Power
USB 3.1 (USB C + USB PD) 5 to 20V0.5 / 0.9 / 1.5 / 3 / 5A100W
Historical
The introduction of USB Type-C connectors on smartphones has helped to increase the speed of reloading phones without fast charging capabilities. Thus, the USB Type-C connector allows to pass a power of 15 watts between the smartphone and the charger, with an intensity of 3 amperes and a voltage of 5 volts. So we stay on a charge that does not heat too much, but is much slower than the mechanisms of Qualcomm, MediaTek or Motorola.
In addition, the USB 3.1 standard will also have finally powered USB Power Delivery. This standard usable by all is able to vary the voltage and the current in order to wait a maximum power up to 100W. It is designed so that a single charger can as well be used for a smartphone, fast charging or not, a laptop.

    
    
        
    
    
    

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