Rackmount lithium battery is an energy storage device that uses lithium-ion battery technology to store electrical energy and release it when needed. Compared with traditional energy storage equipment, rack-mounted energy storage lithium batteries have higher energy density, longer life and better charge and discharge performance. It usually consists of multiple lithium-ion battery cells integrated in a rack or cabinet. Rackmount lithium batteries for energy storage can be used in a variety of applications, such as grid energy storage, solar and wind energy storage, UPS (uninterruptible power supply) systems, and industrial and commercial energy storage.