With the development of smart phones, mobile power has also become popular. After shuffling, the mobile power market has gradually matured, no longer simply judging by the source and capacity of the cell. Better circuit design protection, higher conversion efficiency and better detail experience have become a breakthrough point. And a call with a good feel as the selling point, it is particularly unusual.

On the anniversary of OnePlus, OnePlus released its first mobile power supply, which is called by today's protagonist OnePlus. For mobile phone manufacturers, launching accessories around their own mobile phones can further improve user stickiness and form consumption inertia. For consumers, subconsciously, they are more willing to buy products of the same brand to obtain psychological protection.

On the other hand, when we called back, we claimed that the cost was far more than its retail price of 89 yuan when it was officially released. Of course, we don't know whether it is true or not, but its performance in all aspects did bring a very high cost performance ratio. Although it is cost-effective, it does not mean that there will be invisible shrinkage in details or functions. Once the phone is added, it has done a good job in both surface materials and dual 2A output, and achieved what it has always claimed as "no compromise".

The large transparent window and the design of red letters on a white background make Yijia's calls very conspicuous. The overall packaging design is simple and clear, and the packaging material is strong enough. On the back are various names, models and standards. At present, there are black and white colors in Yijia's phone. The surface material is the same as the paint used by Yijia's phone, which is also the main reason for its excellent hand feel.

Of course, different surface materials such as bamboo and denim may be provided after a call, but considering some process reasons, it is estimated that this will take a long time.

The family photo is actually the standard equipment of mobile power supply, a manual and a data cable. The specifications of various parameters of Yijia call are very detailed. The standard value of the cell capacity is 10000mAh, the minimum value is 9960mAh, and the output and input voltages are 5V.

According to the calculation of relevant parameters, the standard output power of one plus incoming call is 37Wh, and the minimum output power is 36.852Wh. One Cal Power said that its conversion rate could reach more than 80%, that is, the minimum output power was 29.4816Wh, which was verified in the subsequent actual test.

The most special selling point of Yijia's call is its main feel, which is very special and rare in mobile power. Of course, there are also voices that say that a mobile power supply should have a good feel. However, in most of the current scenarios, there are quite a lot of mobile phones and mobile power supplies used together, and when a call is added, this is done under the premise of ensuring excellent conversion efficiency, which makes the hand feel its added value.

At present, there are black and white calls from Yijia, which correspond to Baby Skin and Friction Black respectively. The paint used is the same as that on Yijia mobile phones. This is undoubtedly the best choice for Yijia mobile phone users. The left side of the phone shows a more rounded corner transition, making it more comfortable to hold. Of course, the 10000mAh capacity brings 222g weight, which is not easy at least.

Corresponding parameter identification and power identification can be seen on the side. An incoming call does not set any hardware on, but triggers the power display and output by shaking it. Four blue LEDs are displayed according to the remaining power.

On the side, there is one power input port and two power output ports. The two power output ports are far away from each other, and the simultaneous use will not cause obstacles. In the case of output current, the maximum output current of a single output port can reach 2A. If it works at the same time, the output power of each port is limited to 1A, with a total of 2A.

The coating of Baby Skin used on the surface of Yijia's phone is the same as that of Yijia's mobile phone, but its disadvantages are also the same. After a short period of use, Yijia has formed a certain rub color and use traces. Relatively speaking, the mobile power supply is placed more randomly than the smart phone, which means that the probability of friction and collision encountered by the mobile power supply is higher. Although the shape design is not the key, it is easy to wear and tear the traces of use once the power is supplied, which will make many obsessive-compulsive patients anxious.

The actual test uses a DC electronic load meter to test and conduct a simulated discharge test. The test items include 5V/1A and 5V/2A, measure the actual voltage and actual output power respectively, and calculate the conversion rate according to the formula "mobile power conversion efficiency=actual output power/nominal output power=(actual output capacity * average discharge voltage)/(actual cell capacity * 3.7V)".

According to the test of DC electronic load meter, under the environment of 5V/1A, the actual discharge energy of one plus power is 33.29Wh, and the average output voltage is 4.97V. From the discharge curve, the voltage fluctuation at the point of addition is very stable, and there is no significant voltage drop at the later stage of discharge. Its output quality is quite excellent. From this calculation, the conversion efficiency is 89.97%, which is quite excellent.

In terms of the duty of mobile power supply, one call is competent enough, and it is OK to call it excellent. First of all, in terms of connotation, the 10000mAh capacity ATL lithium ion polymer used by Yijia Power has reached 89.97% in 1A, which is worth more than 89 yuan.

Of course, the more important thing is that the surface of Yijia is the same as that of Yijia mobile phone, using the same paint to create an excellent feel and beautiful design. As an added value of mobile power, this makes its cost performance ratio further improved. But more importantly, it can enhance the identity of Yijia mobile phone users, which may be the main reason for the launch of Yijia calls.