Even though many mobile power supply products on the market are found to be increasing the volume of mobile power with the capacity of mobile power sources, the mobile power supply of 20000mAh in the mainstream market, which is already close to the size of two mobile phones, with a weight of 400-500g, is completely deviant from the design requirements of mobile power supply. For the majority of consumers, mobile power sources are more used in low power emergencies on mobile phones, allowing t...