Mobile power, also called "plug-in battery", "external battery", "back-up battery", "digital charging partner", "charging treasure". The concept of "mobile power" is developed with the popularity and rapid growth of digital products. Its definition is: Portable power supplies that are easy to carry. In view of the increasingly diversified functions of digital products, more frequent use, and closer links with our daily lives, the importance of improving the use of digital products, facilitating people’s lives, replenishing power in a timely manner, and maximizing their utility is even greater. No delay. The mother-in-law mobile power supply is the best solution to solve this problem. If you carry a portable power supply, you can charge a variety of digital products anytime, anywhere.