With the rapid development of the global economy and the continuous improvement of people's living standards, there are more and more portable electronic products, such as laptop computers, tablet PCs, cell phones, digital cameras, camcorders, portable DVDs, PDAs, MP3s, MP4s, GPSs, warming devices, and healthcare devices. They all need batteries, but the original batteries of these devices will not be able to meet the normal use time of the device because of low battery capacity. When traveling or touring is the peak working period of these devices, often the battery is out of power at the critical moment, especially when the cell phone is making a call, the digital camera is taking pictures, the PSP game console is playing vigorously, the PDA is working and so on, so that you feel very helpless and helpless. And you can't have a battery backup for each device, which is not only costly but also inconvenient. Based on this, in order to solve this kind of problem, Lemu mobile power comes into being. With the mobile power can solve the power supply problem of many mobile devices, thus completely solve the pain of lack of electricity, make work and travel worry-free.