Speaking of wireless charger, I think of the "touchstone". I wonder if you still remember the HP Veer and HP Pre3 mobile phones launched by HP in 2011. At that time, they were also obtained through some channels. Of course, the "touchstone" is a must, which is a major selling point of HP Plam, the touchstone adsorption wireless charging solution. It should be said that Dianjinshi was also the first time that mobile phones officially adopted wireless charging solutions.

In the past so long, there have been more and more wireless chargers in the domestic market. Basically, like Touchstone, they use battery sensing technology, that is, the QI standard.

This time, through Lei Feng's trial, VH got the chance to try out the wireless charger. After a few days of trial, I also have some feelings to share with you.

After receiving VH and playing with the wireless charger, I felt that the package was pretty good. The overall gray seemed very low-key, and the patch used the same design, like a notebook, a book! However, due to the paper packaging (including the seal strip), it will crack or deform under certain force (when I received it, the sub seal strip had been broken). The hard shell packaging of the patch is used in a large proportion, so the firmness is good.

The product parameters are in the lower left corner of the back of the package. The font is slightly small and black, which is a little easy to be ignored and feels a little fuzzy.

The package content is very simple. VH plays with wireless charging and a warranty card. The interior design of the package is also very interesting. The charging cable and the charging cable form a tape shape, which is simple and tidy.

Let's first take a look at the patch. The patch is made of flannelette fabric and feels very comfortable; The use of this fabric can protect the mobile phone shell from scratches or abrasions; However, using this kind of fabric will increase the thickness of the patch. The overall thickness of the patch is about 2mm, and there will be a bulge after the mobile phone is installed at the back;

In the middle of the patch cable maintenance patch, if the phone interface is no longer in the middle of the bottom of the phone, it cannot be used normally. However, now the interfaces of mainstream phones on the market can use this patch normally; And objectively speaking, there are many kinds of mobile phones, and VH cannot make patches corresponding to all mobile phone interface positions.

Let's mainly look at VH playing with wireless charger.

The charger has a diameter of 110mm and a thickness of only 5.5mm, which is quite thin; Although the overall structure is metal and the surface is wrapped with leather, the total weight is only 140g, which is quite light; There is a circle of gray anti slip mat at the bottom, so that the charger will not move during use; The charging line adopts noodle design and has certain anti winding function, with a total length of 120cm, which can definitely hide our normal use needs.

The charger has an LED indicator, which is always green after power on, and flashes blue and green alternately during wireless charging.

The product accessories and appearance will be shared here. Now let's see how the wireless charging function played by VH is. In the parameter description, the input requirements of VH Play with Wireless Charging are 5V/2A and iPad charging requirements are the same, while the Touchstone is 5V/1A. Here, two comparison operations are made with VH Play with Wireless Charger. The charging heads of 5V/2A and 5V/1A are used to charge the mobile phone with VH Play with Wireless Charger. Let's see the results below.

【5V/2A】

The charging head of the iPad is connected to VH to charge the mobile phone wirelessly. The actual output voltage is 5.07V and current is 1.28A.

The voltage of the wireless receiving terminal is 4.94V, and the current is 0.84A, so the conversion rate really reaches 70%. When tested with millet 3, 5% of the electricity can be charged every 10 minutes, and it can be fully charged in less than 4 hours. After charging, there will be a little heat in the center of the charger, which should be the reason why VH uses metal structure to play with the wireless charger. At the same time, leather wrapping is not conducive to heat dissipation!

【5V/1A】

The original charging head of Xiaomi 3 is tried this time, and the output of the charging head is 5V/1A. When connecting the VH to play with the wireless charger to charge Xiaomi 3, the output voltage is 5.11V, but the current is only 0.84A.

After the conversion of the wireless terminal, the telephone input is 4.95V, and the current is only 0.68A. Although the conversion rate is greater than 70%, the current is 0.2A smaller than that of the 5V2A charging head. The charging test of Xiaomi 3 is also adopted. It takes 20 minutes to charge 5% of the electricity, and the charging time is basically doubled.

Through the above two tests, although the 5V/2A or 5V/1A charging head can normally use VH to play with the wireless charger, it is recommended that you use the 5V/2A charging head to charge faster.

Summary

Wireless charging technology should be a development direction of mobile phone charging. It can solve the problem that the mobile phone interface is not unified and cannot be used. At the same time, it is convenient to use.

After trying VH and playing with the charger, I felt that it had some advantages and disadvantages.

advantage:

one   The design is simple, fashionable, and contains business style, suitable for home and office use;

two   Light weight, easy to carry;

three   High charging conversion rate;

four   The charging line has certain anti winding function.

Insufficient:

one   The response is slow. It takes about 2 seconds after the phone is put on;

two   Location requirements: the mobile phone (patch) cannot be charged normally when it is slightly biased, so it needs to be as close to the center as possible.

Suggestion:

one   It is recommended that the charging line and charger be separable;

two   The patch can be made thinner (actually, it should be that the phone manufacturer adds charging coils to the phone)