The concept of the earliest contact with wireless charging should be started from nexus4, but after he actually started using wireless charging, he bought lg g pro2 and nexus5. At that time, he bought four or five wireless charging boards on a whim, and gave back to his parents' mobile phones. On the wireless charging patch. However, it was later shown that the wireless charging technology at that time was not yet mature and it was more of a gimmick. There are two main reasons. First, the efficiency of charging is low (probably only 60% of the performance of the cable). Second, many charging boards at the time are designed to be small. There are certain requirements for the placement of the mobile phone (sometimes no results are displayed). Went up in the morning and found no electricity.) And there are few mobile phones with wireless charging at the time, also LG, Nokia and moto, and other mobile phones need to support wireless charging but also from the charging port to introduce a patch or add a shell is not convenient (also occupy data mouth).
Wireless charging sounds amazing, but the principle is not complicated, mainly using the principle of electromagnetic induction, similar to the transformer, there is a coil at the sending end and the receiving end, the primary coil is connected to a certain frequency of alternating current, due to electromagnetic induction A certain amount of current is generated in the stage coil, thereby transferring energy from the transmitting end to the receiving end.
In the years after the wireless charging technology was applied to the mobile phone, it was always tepid, but after the QI standard was formed, the corresponding accessories were also increased. The wireless charging pad was also becoming cheaper and cheaper. The promotion of new technologies often depends on industry giants, and wireless charging is widely accepted. It should be Samsung's application on Galaxy S6. Because there were wireless charging and blessings before, there were some unpopular models. Samsung had known many talents after advertising. Now. Then on the note5/s6 edge+ Samsung made a certain innovation, combined Qualcomm qc2.0 fast charging technology and wireless charging, with a new generation of wireless fast charging technology, increase the charging speed, making wireless charging has become practical Now. However, the feeling is still very few people use, one is to support the wireless fast charging model is not much, just a unique flagship of Samsung's new generation of stunts, and the second is the need to configure the wireless fast charge plate and with Qualcomm fast charge head.
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  Since the use of Samsung s7e has been planning to change the ordinary wireless charging board to a fast-charged version, but Samsung's original wireless fast charging board is too expensive, and other accessories providers seem to have not followed up in time, not particularly good fast After filling the board, the new products of the Nilkin brand that I paid attention to until later attracted my attention. Nilkin's impression of this brand has been good to me, before several mobile phone shells are the brand, before the most common wireless charging board is also a brand of satisfaction
At that time, it was very cool when using this magic dish. The effect chart is as follows
When charging, there is a ring of blue lights with hints, so basically put an end to the situation that did not put on the position. At a time when charging boards were generally smaller, the design was more scientific than those with only a small led.
The second generation of Magic Disk is also very beautiful, but now the third generation has already supported fast charging , and the price is still affordable, which is one of the protagonists of today.
When looking for a wireless charging pad, I almost looked at all the products on the market. I was satisfied that Nilkin was the first and Green Alliance was the second. Green's impression is also good, many 3c accessories are cheap and good. Last time, more than a dozen data lines were also tested for charging. We feel that Greenlink's data line is suitable for excellent workmanship and charging performance is very good. Measured too much at the time, subdivided into ordinary charging and high-current charging and high-pass high-voltage fast charge, the photo was too lazy to write too many results.
However, the design of Nilkin is even better, the ring led lamp looks better, and the surface imitation leather design also prevents the wear and tear with the mobile phone (this is the shortcomings of the previous two generations).
In addition, when looking at wireless charging accessories also found a very interesting product as follows
Combining car charging and wireless charging together, it feels very practical (in fact, many modern models have their own wireless charging pad, but unfortunately they do not have it). The only pity is not a fast-charged version, but it is rarely used on a car. It's also a good idea to charge the phone while it's on hold, so it's time to buy it out of the box.
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Product packaging is very simple.
It should be noted that the wireless charging board has sent data lines but it does not have a charging head. Fast-charged version has to cooperate with qc fast charge to achieve wireless fast charge.
Samsung S7 original charger supports fast charging, I use the jdb and Akyrk charging head, cost is very high. Insert a few good fast headers below.
However, the above are qc2.0, from a long-term consideration can be considered to buy qc3.0, after all, not much, such as the following.
Continue to open box below 
There are parameters and non-slip pads on the back of the charging plate. The middle two magnetic tabs are included in the car's wireless charging. The car's wireless charging board has magnetic properties that can absorb the mobile phone, but its suction is not enough. It needs to be fixed on the back of the mobile phone. It is a disadvantage and affects the appearance of the mobile phone. The comrades to be considered for this consideration are cautiously decided as follows
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Then we first look at the use of fast charge board.
After the mobile phone is placed on the charging plate, a circular blue led lamp lights up under the charging plate, which is very cool.
The phone will also have an animation like water waves when it starts to charge wirelessly.
When the screen is blank, the s7e's extinguishing screen will also indicate when it is charging. Measuring current below
When the screen is turned off, the charging voltage is about 9V, and the current is about 1.3A. Of course, this is the input current of the charging board. The current actually delivered to the mobile phone is about 1.2A. (For comparison, wired charging current can reach 1.6A)
The charging current drops sharply to less than 0.9A when the phone screen is turned on. This is the same as wired charging. When the screen of the mobile phone is turned on, the current will be smaller and even lower when it is used. Therefore, it is not recommended to use while charging. The lower charging efficiency does not affect the battery life. Try to put nexus6 below.
Because nexus6 only supports normal wireless charging, fast charging is not supported, so the voltage is only 5v, but the current is about 1.4A.
Then measured the car wireless charging board, also does not support fast charging, so it is also 5v, 1.3A take the lead.
Then take the car wireless charging board to the car and put it on the first step.
Then fix the car wireless charging on the vent, and connect the usb power cord (to be honest quite hate to hang on the line, next consider fixed at the edge of the line)
The back of the mobile phone is easily adsorbed on the car charger because it is attached to a magnetic plate, and it can be easily charged later. The navigation also looks very convenient.
The mobile phone is shown in wireless charging, but unfortunately it is not a wireless fast charge.
The car is equipped with a fast charging head. When needed, it can be plugged directly from the car's wireless charging board and plugged directly into the phone. The following is also attached to a few people think that the price of a good car charger fast qc2.0 there are qc3.0
Finally summarize the next two wireless charging board:
Magic Disc 3rd generation wireless fast charging is perfect, the design is relatively large, the mobile phone is very easy to place without having to pay too much attention to the position, and the circular led light belt in addition to the beautiful but also has the prompt function. The surface of the leather-like design will not wear out the mobile phone, and it is considered to be the most worthwhile one to buy in all the wireless charging boards that the deaf person looks at. Samsung's original may be more scientific, because with the bracket function, the mobile phone is measured on the more easy to browse information or easy to use while filling, but the price is too high. It is hoped that the next generation of Nelkin can be designed with a bracket. Of course, it should be noted that wireless fast charging still has a certain amount of energy loss. The input current of the charging board is about 1.3A, but it should be within 1.2A to the mobile phone terminal. The loss of energy is basically used by the induction coil to generate heat. (The mobile phone's fever level is higher than that of fast cable charging)
Nerkin car wireless charging is only barely one use, first, because it is not fast-charge practicality in general, and second, because it needs to affect the appearance of the magnetic stripe on the back of the phone, the third is the design of the cartoon outlet is not much science.
With a few pictures attached, saying that note7 although boom (see Zhang Aunt's recent situation, do not know if the downstairs will appear to spray Samsung), but no one can deny that s7e is a perfect mobile phone. Wireless charging is also a highlight feature of s7. Samsung comrades using note5 and above are recommended to experience wireless fast charging. In my opinion, both the home and the office have put wireless charging boards (in fact, the black version of the office was bought too early but it was too lazy to open the box). Usually, the mobile phone is conveniently placed.
