CITIC research newspaper pointed out that portable energy storage, as a branch of the energy storage market, is convenient and is mainly used in outdoor activities and temporary electricity preparation at home. With the improvement of product maturity and the decline in energy storage costs, the industry began to expand gradually around 2018. The global market in 2021 is about 11.1 billion yuan, which is + 161.3% last year. The industry is expected to reach 88.2 billion yuan by 2026 and increase sevenfold in five years. Focus on global brand leaders such as Warburg Xinneng, as well as core supply chain companies such as Penghui Energy.