Thank you for your concerning our multi-functional portable energy storage power supply. This is a portable multi-function power supply.In this era of advanced electronic devices, the battery capacity of mobile devices has become a problem for many people. This product can be quickly charged to the power supply when. you are experiencing power outages and low power. This power supply supports DC output/AC output/USB output, which can supply power for your notebook, cameras, drone, car refrigerator, lighting etc. we will support you the best power product and give you our best price  which we may build good win-win relationship in the near future.