In fact, power adapters are ubiquitous in our lives. Mobile phones, computers, tablets, battery cars, flashlights, etc. need to use such power adapters, which have many models and different powers. Although some are universal, they are generally In some cases, special adapters are used depending on the situation. The so-called power adapter can be simply understood as a transformer, of course, the internal structure is not a simple transformer. Of course, for most people, what we want to know is whether this power adapter at hand can charge my mobile device. Power adapter products are more and more widely used in various electrical products, especially information technology equipment, telecommunications terminal equipment and audio and video equipment, such as: notebook computers, tablet computers, mobile phones, multimedia players, LCD displays, etc. Recently, with the continuous expansion of the market for mobile electronic products such as mobile phones and tablet computers, the domestic power adapter industry has developed rapidly, both in terms of technology and scale. The design has gradually improved and the output has continued to increase. There is still much room for improvement.
The power adapter manufacturer first gives three adaptation conditions, and explains why this is needed later: 1, The output voltage must be the same as the rated input voltage of the load (mobile device), or the voltage range that the load (mobile device) can withstand, otherwise, the load (mobile device) may be burned. 2. The output current of the power adapter should be equal to or greater than the current of the load (mobile device) to provide sufficient power. 3. The interface of the adapter matches the device. All consumers are difficult to distinguish the quality of the power adapter when purchasing the power adapter based on the above situation, but can pay attention to the following points: 1. Check the identification of the power adapter. Qualified products must include information such as the rated input voltage or rated voltage range, the nature of the Power Supply, and safety instructions. Consumers should not purchase power adapter products that are marked in foreign languages. 2. Check the plug and interface of the power adapter. A loose interface will make the current received by the machine unstable, and may cause a large instantaneous current, which will cause damage to the machine; while the interface is too tight, it is not easy to plug or even damage the interface. 3. Products with "CE" certification are preferred. If possible, check the authenticity and validity of their certificates on relevant websites if possible. 4. Select the power adapter that matches the whole machine. Before purchasing a power adapter, you need to know the basic information about the electrical parameters of the complete appliance used with it. The output voltage must be consistent with the rated voltage of the complete appliance. 
Moreover, the prices of high-quality products produced by some large manufacturers will not be too high, and the use of the products can be guaranteed, which is more worthy of our trust. If you want to wholesale such products, you must choose multiple types of models and wholesale products through professional manufacturers, which can also ensure its quality.
Shenzhen Waweis Technology Co., Ltd. is a professional power supply manufacturer specializing in R & D and production of power supplies. Welcome everyone to visit and consult!
Best regards,
Jasmine Fu
