Solar chargers are nothing new. You can search a lot of them on Taobao. The advantage of solar chargers is that you can charge your mobile phone in a sunny place. However, due to volume limitations, the size of photovoltaic panels cannot be made too large, so solar chargers charge very slowly, which is a common problem. The roll-type solar charger introduced below overcomes this shortcoming. The photovoltaic panel adopts a bendable roll-type design, which greatly increases the area of ??the photovoltaic panel and speeds up the charging. The roll-type design is easy to carry and the design is inspired by ancient paper. Papyrus. When charging, you only need to pull out the photovoltaic panel. It is made of aluminum housing and has a switch button, USB charging port and 5 battery indicator lights at the bottom.