This is a 18650-type 3500mAh NCM low-temperature lithium-ion battery adopting wide-temperature NCM cathode material and low-temperature electrolyte system. It enables stable discharge at -40℃ extreme cold environment with high actual capacity, low internal resistance, long cycle life and excellent safety performance. Suitable for military power supplies, dash cams, GPS navigators, navigation beacons, intelligent monitoring, field detection and various low-temperature outdoor equipment, meeting the continuous power supply requirements in severe cold and low-temperature working conditions.