Consumers need to consider many factors such as brand, appearance, price, safety performance and so on when purchasing a USB power adapter. Mainly pay attention to the following points:
1. Try to purchase USB power adapters produced by regular manufacturers through official channels such as brand authorized stores and professional stores, and avoid purchasing unreasonably low-priced products from online stores with low reputation and wholesale markets.
2. Carefully check the "CCC" mark when purchasing. The USB power adapter is a product that belongs to the national compulsory certification (3C certification), so consumers should buy products with the CCC certification mark to verify the authenticity of the product certification mark and certification.

3. When using, you should pay attention to select products whose USB nominal output specifications match the input specifications of mobile phones or other powered devices to prevent overcharging and other faults.
4. When using, pay attention to connect the power receiving device and the output end of the USB power adapter first, and then connect the socket to the grid power supply, do not charge for a long time, and try to avoid operating the power receiving device during the charging process.