The external USB charging bag can take out the data cable from the charging bag and connect it to the data interface of the school bag for charging. The backpack itself has no power supply. It only has one USB socket for easy charging. You can put the power pack in the bag and connect the cables. With the outside socket, you don't need to open the zipper of the backpack to charge. The power pack fails to charge, usually due to the following malfunctions:
1. Damaged USB charging head.
2. The constant current charging circuit inside the power pack is damaged, usually the main charging chip is overheated and burned.
3. The cable connection between the charging head and the power pack is poor, or the cable is broken. Development: A mobile power pack (MPP for short), also known as a power bank and travel charger, is a portable charger that integrates power supply and charging functions and can be used to charge digital devices such as mobile phones or backup power anytime, anywhere. Mobile power generally uses lithium batteries or dry batteries as storage units. Different from the internal configuration of the battery, also known as a plug-in battery. It is generally equipped with a variety of power adapters, which usually have the characteristics of large capacity, multi-purpose, small size, long life, safety, and reliability. of functional products, handheld game consoles, and other digital products anytime, anywhere.
