This drying matter I feel fairly kind, there is a connection between the two things. One can be inserted on top of the other to see if it is "healthy". There is a PY (friend) relationship between them.
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[The torch is a USB voltage and current meter]With regard to the USB voltage and current detection table, I wanted to buy one before long. Especially during the recent cleaning, 11 chargers were found from home. Which one is eliminated becomes a problem, and these chargers are relatively new.
Back to the original topic. . . I started by looking at the YZXstudio green watch, but the price was a bit expensive for me. In Ma Yun's home search, wow plug scared the baby almost went to find horse rong talk. On the other side, a sign called Torchfire was found in the home of XX. After "seriously" studying for 2 minutes, the cat was placed under Tmall. The price of 59 yuan I still can accept.
Then the sun started.
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[The torch is out of the box]
The torch is a simple kraft paper package for the box. In addition to the contact signs and the "Torch for Torch" torch sign, the front line also reads the slogan "Quality Molds Brand". The back of the box is written with various contact methods and methods of purchase, and in the upper left corner is also written in small words, "Jingdong suppliers" Oh.
The packaging in the box is simple, and it is not fixed with paper compartments or plastics, but is directly packed in a sealed plastic bag. Simple packaging makes it easy for people to doubt the reliability of the product. Are you sure this is not a cottage in a cottage? ?
Under the plastic bag is also hidden product instructions and warranty cards.
The torch is voltage and current meter appearance similar to the U disk, the appearance of transparent black plastic. The front is written in English with the words "QC 2.0/3.0/MTK-PE Trigger". The back is full of English parameters, where the voltage and current range of 3 to 30V feels good.
There is only a small round button on the side. This manual can be used to switch between QC2.0, QC3.0, and MTK-PE modes.
The torch has two interfaces for voltage and current meters. Among them, the USB male head adopts a blind insertion design, which does not need to distinguish between positive and negative, but only needs to care about the display being right on itself.
The next evaluation will be with mobile power, please do not worry. Let's look at mobile power again.
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(Yiyi 4000 Ma mobile power supply)At the end of last month, Jingdong got a smart digital or a festival. Then the friend WeChat shared a link to me, saying that it is possible to receive the coupon. In the spirit of self-defense, the principle of the black number in the end to grab a few. The event page happens to have a flop draw game. I thought about it. After two days in a row, actually it was actually a "Yiyi 4000mA mobile power supply". After simple data registration, it was submitted.
About 12 days after the event ended, suddenly received a pass in the package. I still wonder who sent the mysterious gift of the Tanabata? ? ? After seeing it open, my mother actually shipped it. But why is the third party delivery.
The next is a simple sun bill for the winning show.
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ã€Beautiful open box】
An old cardboard box with a bubble wrap inside. The box is rather shabby and full of style.
The front box does not have a sense of design. If it is not a large box, it is thought to be a box of playing cards. The back of the box is a description of the parameters of the mobile power supply. The model name is Meiyi i4 mobile power and the capacity is 4000 mA. Fortunately, the seal was not removed.
There are only a few things in the box. Mobile power and certification. 
The certificate contains the instructions. The manual describes the appearance of the mobile power supply, charging and discharging, and precautions.
It is the blue Miyoshi mobile power that comes to hand. On the front side, MEIYI is written in Pinyin, and there are 4 LED power indicators on the bottom. At the bottom just below is a logo similar to a spade poker (all said that the box is like a poker). Through the back of the instructions marked, we can understand that this mobile power is a beautiful i4 youth ultra-thin mobile power supply, capacity of 3600/4000mAh, rated capacity of 2400mAh 5.1V (typ 1A).
The top of the mobile power supply is a machine-line integrated design with a data cable (a USB port on one side and a Micro USB port on the other side). There is no need to take a multi-tape line on the go. This is a relatively easy task.
At the same time, there is a Micro USB input interface on the side of the mobile power supply.
Because the circular arc design around the mobile power supply, and the details of the gap processing also get a bit, there is no sense of split, so in the feel is still good.
Each light represents 25% of the electricity, full light is full. The way to check the battery is to shake it. When you are bored, simply shake the battery to show the current battery level. . . The question is, will the mobile power be in a flash when it is placed in the bag? ? ?
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[both simple evaluation]Before the test, please refer to the official description of a set of Mage Mobile Power.
The PPT introduction has a lot of features and it feels very powerful. But what we really care about is the actual effect of charging. Then I will conduct a simple test.
PS. The following pictures are not taken at the same time. If there are any differences, please forgive me.
â–² Because the U.S. mobile power has embedded data lines to hide the design, it needs to be extended to complete the test. First of all, we can see that the no-load voltage of the U.S. mobile power supply is 5.03V, which is considered to be more consistent with the marked 5V value.
â–² On a small fan before buying it as a load. The voltage dropped by 0.23 to a value of about 4.80V. (Because of the fan, the current keeps changing.)
Please come down to the "industry benchmark" millet mobile power for comparison. There must be applause here.
â— millet mobile power is to force, no load voltage is 5.12V.
â— The voltage of the same fan connected to the fan has dropped. However, only a drop of 0.06V was completely negligible.
▲◠Meiyi mobile power and Xiaomi mobile power are respectively connected to the mobile phone. The result is already obvious. Xiaomi’s performance is more stable and reliable.
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Next is the other performance of the torch for the USB voltage ammeter.
■★ First, two different millet phone chargers. From the appearance should be able to distinguish the second is the old model. In terms of no-load performance, the first one did not reach 5V.
■★ Both are connected to the red rice phone for charging test. Before the no-load performance did not reach the 5V charger, the voltage rose to 5.31V after connecting the mobile phone.
â—† The Huawei charger with fast charging function has a no-load voltage of 5.19V, which is not bad.
■★◆ The three plugged in millet mobile power to test. Which charger do I leave? ? ? Still lose the old money in the middle.
â—Ž last two worth buying custom millet mobile power town building. This is one that I carry with me, and the charging and discharging effects are all great.
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ã€to sum up】The torch is a toy for USB voltage and current meter. As for the accurate value, how much error? ? In fact, it was enough for me. After this measurement, it is rare to have the opportunity to use it again. As for the Ubisoft 4000mAh mobile power presented by JD, it can be used to power fans. If I really charge the phone, I still choose millet power.
Last tip, if you participate in the event, please remember the screenshot and keep the activity link address. If you do not receive the prize, please consult with the customer service. . . If you say 888 Jingdou compensation, please pay attention to the black number.
By staylalala 0824