Beam Backpack is a solar rechargeable backpack. It adopts innovative technology and uses a “flexible film cell panel” to convert solar energy into electricity and realize electricity storage. In addition, with patented USB adapter transfer technology, it can achieve power input and output without opening the backpack and plugging in the charging cable. It can satisfy the users’ needs for mobile power supply and emergency power supply and provide an environmentally friendly, safe, convenient and comfortable user experience during their travel.