About every 1 MWh maintenance fee of about 10,000, the first 3 ~ 5 years maintenance costs less maintenance costs after five years of maintenance costs of about a full set of equipment costs of 0.5-2%; (investment in 1WKH of the energy storage cabinet investment costs of about RMB 1.45 million yuan after five years of maintenance costs of about RMB 7,000 yuan ~ 28,000 depending on the degree of aging on the site between)