In recent years, with the rapid development of the industrial manufacturing field, and the increasing demand for off-grid power in outdoor sports and home emergency scenarios, the portable energy storage power supply market has developed rapidly. According to a report by Allied Market Research, the global portable energy storage power supply market is estimated to be $3.9 billion in 2020 and is expected to grow to $5.8 billion in 2030, at a CAGR of 4.1%.