Ningxiaodian's high-performance start-stop series of sodium-ion battery systems support multiple application scenarios for passenger vehicle starting and start-stop, including pre-installation, post-installation, and auxiliary power supply. Adopt the industry-leading sodium-ion material system. It features a high low-temperature discharge rate, with an instantaneous starting current of over 30C and a designed service life of more than 5 years. High safety, passed the national standard safety test, does not cause needle pricking or explosion. Equipped with an advanced BMS battery management system, it can monitor the battery's charging and discharging conditions in real time under different temperature ranges, as well as advanced detection, control and balancing functions such as the pressure difference between cells, overcharge protection and surge current absorption. It can perfectly adapt to the usage scenarios of passenger vehicle batteries in different regions of the north and south.