UGREEN also did not stay away from the universalhype, the price is already relevant. From the charger with this brand you expect high quality and reliable performance. And the prices are not sickly. Not surprisingly, that is how it turned out to be checked. Specifications can be said to be underestimated
Shipping and PackagingDent October 01, received October 20. Full track
Transport packaging - corporate green package
Commercial packaging - branded box, tightened in a thin PE film. Top sleeve of bleached cardboard with inscriptions
Then the actual box of micro corrugated cardboard
Specification Brand: Ugreen
USB ports: 1
Input voltage: 100-240 V / 0.5A
Fast Charge Support: Qualcomm Quick Charge 3.0
Quality Certification: European Certificate of Conformity (CE), RoHS, FCC
Output Interface: USB
Output voltage: 3.6V-6.5V / 3A, 6.5V-9V / 2A, 9V – 12V / 1.5A
Appearance Classic for network charging with euro plug
The nest is also black, without the popular orange
We check the performance. Maximum current for 5, 9 and 12 V is specified 3, 2 and 1.5 A
In fact, it holds significantly more - 3.5 (+ 17%), 2.5 and 1.9 (+ 25%)
You can see that charging with increasing current slightlygives voltage (load, combined with the tester is inserted directly into the charge, without an intermediate wire). You can find fault. But IMHO you can charge something only through a cable. And even the best cable will give a voltage drop, which charging successfully and compensates.
QC 2.0 and 3.0 Fully fulfills
Long-term operation at maximum current with dashing at maximum current rating and 5V. Without comments
Housing temperature is very moderate
Then, without disconnecting the load (and even inadvertently giving 12 V for a while), I reduce the current to 2A, increase the voltage to 9V
The temperature of the body has somewhat decreased.
All tests are considered to be brilliant.
Instructions and komplektatsiyaV package except the box enclosed Velcro clamp for wires
Actually in the box, charging in the white package and manual
The manual is multilingual, there is no Russian. I cite the English version. I found nothing useful in the manual.
Gentle autopsy. As I was already happy, I bought a vise. And the hand is still full in adolescence, best of all it is done by chopping nuts with a vice. First walnuts, then hazelnuts.
Old belt as protection. A thick coarse rag will fit in several layers. And a little bit with a knife blade help.
It is seen that the glue seam collapsed, and the parts themselves got off with minimal damage
Inner world On the product page is a render.
Compare, in general - a little
The capacitor voltage in the pictures is visible - 400V at the input, 16V at the output. And one for 50.
I see no flux traces on the board. Partially washed, partially abundantly filled with varnish. This is good, additional protection from moist air. But a side effect is that the engraved inscriptions on the chips are practically not read.
More or less only the marking of the diode bridge is visible, datashit
The rest I will not undertake to decipher
A note about the brand Ugreen is IMHO alreadyreal brand. Although small. After all, a brand is like a good name, reputation with a person. A person with a high reputation appreciates his name and does not allow himself what others allow. Also, the Real Brand, in my opinion, is distinguished above all by its high guaranteed level of quality. Here, it is not the best samples that are important; they can be anyone's lucky, but the worst. If I buy any (!) Harley Davidson or LVHM product, then I can be sure that I will receive the highest quality. Yes, more expensive than noname. Ugreen has it all right here. It is not a shame to recommend buying a charging, cable or hub Ugreen. Now, if they take up bicycles or mobile phones, I can’t say anything. But sort of doing what they ate dog.
Merits and demerits and total Premium quality at a premium price.
The advantages of our charging are simple as it should be.branded product. High-quality execution. The specifications of the charge overlook are not only provided, but with a good margin. With long-term work on the limit passport loads with thermal conditions, everything is just fine.
The disadvantage is also understandable. In an unnamed basement, such charging is cheaper. Well, not really, of course, such
⎈⎈⎈ Appendix Q ⎈⎈⎈Two words about Quick / Fast / Super / Puper Charge, or an overview of the current zoo options for fast chargingNB Consciously simplifying.
USB specifications include fastcharging Steep like the Himalayan ranges. But there is a minor nuisance - on four USB 2.0 wires and regular USB 2.0 Type A connectors, this does not work from the word at all. It is necessary to have Type C on both sides, moreover type C is properly routed, and not on 4 conductors, as in 99.9% of USB type C cables available on the market. Yes, even with a special microcircuit in the cable itself.
For example - Belkin 3.1 USB-C to USB-C Cable, recommended price of some $ 29.99
At the same time - Good presentation for those interested in details.
As a result, gadget makers got a choice of three options.
1. To charge for fast charging, costing a pair of three resistors in order to signal the possibility of transferring over USB, not half a mapper, but more. Up to 2.4 amps in practice.
2. Make your amusement park, with preference and harpists, but working on 4 wires USB 2.0
3. Implement USB Power Delivery in its entirety.
Fast Charge In real life most gadgetsnot so much gains from fast charging. I once tested the utility of Quick Charge 3.0 on my phone. And it turned out that there is a significant acceleration of charging for large batteries, and for the characteristic ones in the middle segment, the gain is not that fundamental.
Additional information for nerds
Discharged the phone before disconnecting. I connected my native cable to QC 3.0 charging, recorded the values of currents and voltages (the software writes with a quantum in 2 seconds). He tested the utility of Quick Charge 3.0 on his phone, along with charging. Red, resistance along with contact 0.15 Ohm, the figure is exceptionally good.
Measurements of voltage and current are carried out at the charging output, up to the cable. How much comes to the phone is easy to calculate according to Ohm's law.
Blue - voltage, red - current.
Discharged again. I connected it with the same cable to normal USB charging (from Ikea. Passport current up to 3.4A, up to 2.4 A per port). In both cases, 30 minutes after the start of charging, the phone was turned on.
Green - voltage, crimson - current.
The voltage scale on the left, the currents on the right.
And what do we see?
1) QC 3.0 charging starts quite quickly, supplies ~ 12W of power to the phone, voltage is 6.35 V, current is 1.88 A
USB charging is inferior in both current and voltage, only gives ~ 9W.
That is, there is a gain at the beginning of charging. Well, not at times, but a third, also bread
(Let me remind you that I turned on the phone for about 30 minutes in both cases, hence sharp spikes in voltages and currents. After a few minutes they returned to their values)
2) But somewhere in the 42 minute charge current in the case of QC3.0 charge drops abruptly and continues to decrease. And USB charging holds the maximum current for an hour. As a result, already somewhere around 50 minutes the lag of USB charging begins to decrease. And by the end of the charge after more than 2 hours almost comes to naught.
By the way, let's compare advertising.
Therefore, most phones are implementedoption 1). As the cheapest. Even in past generations of Apple phones
It is important to remember that for really fast charging at 5 V you need a quality cable with low resistance. (I tested the utility of Quick Charge 3.0 on my phone, briefly repeat it under the spoiler)
Additional information for nerds
Compare, other things being equal, charging one andthe same phone from the same charging through a great 0.15 ohm cable and disgusting at 1 ohm. Measurements of voltage and current are carried out at the charging output, up to the cable. How much comes to the phone is easy to calculate according to Ohm's law.
Excellent cable: Blue - voltage, red - current.
Disgusting cable: Green - voltage, crimson - current.
The voltage scale on the left, the currents on the right.
Here it is, a multiple of the current drop and a multiple of the charging time.
Proprietary fast charge optionsTo whowent the second way, with their own amusement park, suddenly created a lot of separate, proprietary, partially or fully incompatible specifications. It is unlikely that someone will choose the manufacturer of the phone on the technology of fast charging, but I want to note a comparative article on xda-developers.
Qualcomm Quick Charge Most Popular on the MarketLunapark-like turned out to be QC. Just because the lion's share of flagship phones, which eat a lot and have capacious batteries, are based on the SoC Qualcomm.
NB The captain specifies that in QC charging withAn ordinary USB port (USB type A by science) can safely turn on non-QC-enabled gadgets, including Apple gadgets, and those supporting another generation of QC. If the consumer does not support QC - charging will work as usual with terminating resistors (“Fast Charge”). If different generations are supported, then both will understand.
The first version to be distributed hasintuitive QC 2.0 number and came out in 2015. If both the charging and the consumer support it, they can, by modifying the voltages on the data lines D + and D- USB 2.0 (we will see below that it is important), agree on an increased supply voltage - 9 or 12V . (In theory also 20V, but this is a great rarity).
The win is obvious - with increased voltagethe required power is transmitted by lower currents. Less is lost in the wire, less heat. In contrast to the PD standards, all negotiations go over standard USB 2.0 cables.
QC specification 3.0 was released in 2016 and to this day remains the most popular option technology. That it implements the observable charging. 4 USB 2.0 wires are still used. In QC 3.0 charging and the consumer can, modifying the voltage on D + and D-, agree on any voltage between 3.6 and maximum for a given charging, with a step of 0.2V. The maximum voltage is 12 V for class A (the vast majority of real devices) and 20 V for class B.
Marketers called it all "IntelligentNegotiation for Optimum Voltage (INOV) ”- Intellectual Negotiation for Optimal Voltage. The technical idea is that the heat generated when charging the battery is one of the important limiting factors of the charging speed. And heat, among other things, is released on the voltage converter. If this transformation is taken out of the phone and placed in charge, you can charge faster.
And so everything went so well - but a little-known Google intervened, with a certain influence on the market for Android devices. And said No way! That is highly recommended in requirements to devices based on Android 7.0 with a USB Type C connector, do not use voltage-changing technologies on USB 2.0 data lines to coordinate charging modes. With the promise of a subsequent direct ban.
Type-C devices are STRONGLY RECOMMENDED to notIn the case of the USB power delivery methods. In the future, it is possible to complete the inter-operability with the standard type-C chargers.
Do you think as a result everyone did it? Yes and no. Yes, and Qualcomm and, in the mass, the phone manufacturers understood correctly and literally fulfilled the requirements. No, because the transition to USB Power Delivery (remember, with $ 30 cables) did not happen. For some reason. Instead, manufacturers of chargers dramatically slowed down the transition from USB Type A connector to Type C, and previously released samples from Type C began to withdraw. And, in turn, the manufacturers of smartphones did not hurry with the transition from microUSB Type B to Type C. And what you want - loot always triumphs over evil. And rumors about the accumulated tons of old microUSB connectors are in favor of the poor.
Meanwhile, in Qualcomm, they tensed and offeredGoogle compromise. Its essence is that the next generation of Quick Charge specifications will be compatible with Power Delivery. Namely, it will be necessary to use the Type C connector, through it it will not be necessary for the consumer to first interrogate him to receive energy according to the Power Delivery specification. And only if the consumer does not deign to offer him the Quick Charge option.
While lawyers from interested parties were working outmillions of fees, the whole market was waiting. Therefore, the practical application of Quick Charge 4.0 and the transition to literally in a few months to Quick Charge 4.0+ was somewhat slowed down. It seems that a compromise has been reached - but there was nothing public fraternization. So who knows - maybe in half a year Quick Charge 4.0 ++ will be released, we will not guess.
Since we started on marketing. Qualcomm licenses to manufacturers Quick Charge smartphones for a fee. Therefore, it is impossible to say on the basis of technical characteristics whether a particular phone model supports QC or not. To the extent that sometimes not, but if you tweak the firmware, then yes. Secondly, there is a widespread opinion that QC support is determined by specific Qualcomm SoC models. Even written in English Vika. Nevertheless, this nonsense is nothing more than an actively cultivated marketing legend. That is proved by licensing QC on the Galaxy S6 (based on Exynos) or ASUS ZenFone 2 (Intel).
MediatekMediatek could not stay away. The technology at Mediatek is called Mediatek Pump Express. Suddenly, Mediatek-based phones are supported
The wisdom of such a cautious decision became evident in the days of the wrath of Google, cf. a little higher.
There are three generations of PE, the newest PE + 3.0 to USB Power Delivery (which, in particular, means working only through full USB type C ports on both sides.). For details on Pump Express I refer to, albeit an advertising, but rich technical info corporate presentation.
The rest, of course, could not but make their versionin Huawei - called SuperCharge. And where to go - processors, to rake. I did not see live, but judging by the descriptions - 5B at very high currents, up to 4.5A. That is, extremely high requirements for wires, connectors, contacts, etc. An important advantage is that there are universal chips (and, accordingly, charging) that can also Qualcomm Quick Charge and Mediatek Pump Express and Huawei SuperCharge. Another thing, I do not really understand where everything in one bottle may be needed. Well, except that in a taxi, pub or hotel, as a premium service for customers.
No matter how strange it seems, though Samsung didown version (Adaptive Fast Charging), but obviously it does not pedal. This is a castrated version (only up to 9 V) of QC 2.0 with limited compatibility. Special development of technology is not noticeable. IMHO this question is of little concern to Samsung marketers, aimed at fruit competition.
Motorola has TurboPower. It can also be found in Lenovo products. He also did not hold that turbopaver, but it seems that TurboPower 25 is a rebranding of Qualcomm Quick Charge 2.0. But TurboPower 30 plus to 5V can issue up to 5.7A.
How was it? Severe domestic LED ...
Severe domestic LED signals easy overload
Marketing word for Oppo - VOOC(Voltage Open Loop Multi-step Constant-Current Charging). There is no point in translating these harsh words, because technically - the licensed version of the technology of the related company OnePlus. They still promise Oppo Super VOOC, but I don’t know anything about her except the marketing name.
Meizu shows beautiful pictures about Super mCharge. Allegedly 55W - up to 11V at 5A. When this cable is suddenly on 160 watts. I don’t know what girlish dreams are, what technical reality is.
But in reality, the guys from OnePlus surpassed everyonewith your DashCharge. In three senses at once. First, they made a very effective version with 5B and 4A. In some tests, even leading. Secondly - they made it on charges and wires that are not compatible with any standard hardware at all. :)) If you decide to ask the price - be sure to sit down first. As Panikovsky used to say, I respect them very much, but they are fit to get a prize of anal fencing on behalf of Sony. It was this esteemed company that over and over again created excellent technological solutions, which lost the market competition to simpler options, but more common and therefore cheaper. Video tapes, magnetic disks, memory cards - running on a rake round after round.
And thirdly, the widely advertised DashCharge brand in the spring of 2018 urgently had to be thrown under the tail of the cat. Because registration was denied, and something under the name Dash is at Amazon and audio equipment manufacturer Bragi. Last even took legal action.
USB Power Delivery I'm surprised, but this time Apple Inc. I did not fence my own amusement park, but uses USB Power Delivery for fast charging gadgets starting with the iPhone 8. Moreover, they write directly about the possibility of using third-party devices for this.
More on the third way went manufacturersgadgets that need really a lot of energy. First of all, these are laptops. But, as we saw above, both Qualcomm and Mediatek in their latest specifications are getting closer to a common standard. And it is already possible to buy a charge (albeit not cheaply), which works both on PD and on QC. And use it even for a laptop, at least for a smart. However, in practical tests (cf. the same an article) specifically for Power Delivery smartphones somehowthere are not enough stars from the sky
1. Current specification version
USB Power Delivery Specification Rev. 2.0, Version 1.3 and corresponding Adopters Agreement
+ project next
USB Power Delivery Specification Rev. 3.0, Version 1.2, June 21, 2018 and ECNs -