Temporary power outages often occur in Africa, India, and other regions. To overcome these inconveniences in people's daily life, this multifunctional energy storage device can convert solar energy into electrical energy and store it, then supply power to appliances and 3C products. In addition, it can function as a speaker, FM radio, or flashlight. The grip and compact size are designed with user ergonomics in mind. With various sizes and functions to choose from, it supports a variety of different usage scenarios.