Unconsciously, from 2016 to the present, I bought many small and large millet items. Buy a red rice with 3 high version, millet mobile power, millet Bluetooth handle, millet Bluetooth self-promotion. Aunt Tuo's blessing, all measured red rice 4, gold coins against yeelight color change led light bulbs ... ... this is to become the rhythm of rice flour ah ... ...
Objectively speaking, Xiaomi's things are fairly good, well packaged, and cheap enough. Of course, the premise is not to monkey, plus a little better character. Fortunately, I did not encounter monkeys and character problems. Since you bought so many of Dongdong's stuff, you have to fill in a few more pits. This doesn't happen. You suddenly saw that Xiaomi Mall has two USB charging heads to buy and buy...
Reasons to purchaseTo say this charging head, it is really low-key, look at the news of the mother's family, actually no one thought, it seems destined to be a small minority.
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Millet USB Charger (2 ports) 49 Yuan Value Friends broke the material Original: Xiaomi had released a 4-port USB charger on rice flour festival in 2016, 4 ports support 5V2.4A output (total 35W), subject to a lot of rice noodles attention. Today, Xiaomi added 2 USB chargers to its official store and Tmall flagship store. This time, Xiaomi upgraded the QC3.0 output to better meet the needs of the current fast-charging mobile phone. The price is 49 yuan. .æœå· | Value 0 Comments 0 Favorites 0 Direct Links View Details In 2016, there are many trips to climb and there are many electronic devices on the road. The first thing to do in each place is charging. The USB charging head of the electronic device is generally a radish pit with only one output port. Although the USB charging head electronics can generally be shared, there are so many things that need to be charged, and it takes N hours to fully fill up a circle... so we have the idea of ​​buying a multi-port USB charging head.
With the introduction of fast-charged mobile phones and charging treasures, the charging head can be quickly charged. Taking into account the convenience of mountain climbing, too large and too heavy charging heads are not suitable. Therefore, the definitive purchase of a small, light, fast-charging charging head is definitive. With regard to fast charging, there are a lot of QC2.0 USB charging heads on the market, but QC3.0 is almost nothing. Do you think or buy a QC3.0 more forward-looking (however, there is no QC3.0 electronic equipment)......
Xiaomi's 2-port USB charging head fully meets the demand of Yu, so I immediately bought it after I saw it on the 13th of January.
Millet USB Charger (2 ports) 49 Yuan Millet official website direct link appearance display 
As the Chinese New Year approached, Xiaomi’s bag was also very festive.
There is also a small LED lamp that you can buy together with 5 brightness adjustments. Buy this lamp together for a discount of 5 yuan......
With the front of the box, the white pattern is printed on the white box and it does not matter. Look carefully, the picture is flawed...
å The reverse side of the box, bar code, origin is Dongguan, Guangdong...
More detailed information on production areas.
↑ Charging head parameters, really printed, this really should not be thought to buy fakes ......
↑ Open the box, charging head and instruction manual. The manual is more useful information: Wide voltage, casual use at altitudes below 5,000 meters, multiple protection and safe charging, output 5V/3A, 9V/2A, 12V/1.5A when single port, 5V/3.6A output when dual port, maximum 18W.
↑ Remove the bag that holds the charging head. The entire charging head has a smooth appearance without a big logo.
The plug is foldable, which is very popular. Below the plug is the parameter identification, the first line finally has a small millet logo......
When the plug is in an upright position, it feels as if the card is tight and the workmanship is good. Trying it with a magnet looks like iron.
↑ The output interface is affixed with a sticker.
↑ Remove the sticker. Two interfaces, there is no sign that these two interfaces are QC3.0, this is not common sense ... ...
It is 475mm long.
The width of 465mm is basically a square.
Thickness 279mm. The entire size is similar to the charging head of the ipad.
Finally, under the scale, 60g, this weight is satisfactory. It is obviously appropriate to go hiking.
experience feelings
Please check out the USB tester to do some physical examination on the charging head. This is the main USB tester on the left, which can output current and voltage curves. Because it is just playing the tester, so if there are any mistakes in the following also hope correcting.
The test used ipad4, the new millet 10000mAh charging treasure, determined to be QC2.0, and red rice 4, the rumors are QC3.0.
↑ Two USB testers plug into the charger and are very compact. Of course, the lines are still not connected...
The first is a main USB tester plugged into one of the interfaces of the USB charging head. If the other interface is empty, this is a 5.71V display under a 5V no-load condition.
↑ 5V stepping current test, maximum output 5.34V 3.28A 16.6W, wired compensation, with the increase of load current, the maximum line to 5.34V. Exceeding the standard can achieve a nominal 5V 3.0A output.
↑9V shows 9.164V with no load.
↑ 9V stepping current test, maximum output 9.26V 3.29a 20.6w. Wired compensation, when the maximum voltage is greater than 2A, can also achieve a nominal 9V 2A output.
↑12V shows 11.90V under no-load conditions, which is a bit unsatisfactory.
↑ 12V stepping current test, maximum output 11.98V 3.2A 20.9W. At a maximum voltage, the current is greater than 1.75v, and a nominal 12V 1.5A output can also be achieved.
↑QC3.0 test, maximum voltage 11.868V...
↑ In the charging head, an interface is connected to the main USB tester and the red rice 4 is connected, and the other interface is empty. In the case of QC2.0 5V, the charging voltage is 5.241 V, the current is 1.5 A, and the power is 7.86 W.
In the case of QC2.0 9V, the measured charging voltage was 9.284V, the current was 1.216A, and the power was 11.29W.
In the case of QC2.0 12V, the measured charging voltage was 11.93V, current was 0.067A, and power was 0.08W. This is not practical.
↑ In the USB charging head, one interface is connected to the main USB tester, then the millet charging treasure is connected, and the other interface is empty. In the case of 5V, the charging voltage is 9.314V, the current is 2.039A, and the power is 18.99W. The data is perfect.
In the case of 9V, the charging voltage was 9.329V, the current was 2.040A, and the power was 19.05W.
In the case of 12V, the measured charging voltage was 9.352V, the current was 2.042A, and the power was 19.10W. In other words, millet charging treasure can basically be charged at full speed under QC2.0.
↑ Ipad was connected to the main USB tester and the charging voltage was 5.35V, current was 2.207A, and power was 11.81W. Ipad can basically charge at full speed.
↑ Charger's 2 ports are connected to USB tester. A 5.17V, a 5.18V is measured under no-load conditions. According to the instruction manual, if both interfaces are plugged into the data line, only 5V 3.6A can be output. The measured data is a good illustration of this.
↑ Charging head 2 interfaces are connected to the USB tester. The main USB tester is connected to the red meter 4, and the charging voltage is 5.383V and the current is 1.684A. Auxiliary USB tester connected to millet charging treasure, measured charging voltage 5.37V, voltage 2.08A. Both charging currents are discounted.
to sum upMillet USB charging head (2) performance quite satisfactory. Due to the small size, the power can't be done very much, but through a very clever design, fast output is provided when the single-port output is provided, and the output current is provided when the dual-port output. This is also in line with the increasing trend of fast-charging devices. If an output port can achieve fast charging when the dual-port output, one can not output fast charge current, this will be more practical. In addition, it is very unhappy when the outer packaging is printed. In addition, I really do not understand the red rice 4 fast charging method, the measured charge voltage is 6.89v, current 1.6A......
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