This portable power supply is small in size, lightweight, easy to carry, and suitable for outdoor use. customizable large capacity can meet the charging needs of different devices, with multiple uses, usually equipped with multiple power adapters, which can charge various digital products such as mobile phones, digital cameras, laptops, etc. safer and reliable, with protective functions such as overcharging, over discharging, overload, short circuit, etc., ensuring safe use. In addition to the function of portable mobile power supply, it can also provide a high-power AC interface and be configured with various types of DC output interfaces. suitable for outdoor activities, emergency backup power, electric vehicle backup power, and other scenarios.