The LS/LU series bms products are battery management systems developed for large-scale high-voltage battery energy storage systems. It adopts distributed architecture, modular design concept, high configurability, easy assembly, debugging, and maintenance. It is suitable for various battery energy storage systems with dc voltage below 1000v. This product can be configured as a secondary architecture (bmu+cbms) for 10kwh-100kwh. Cooperate with industrial computer and battery stack management software to form a three-level architecture (bmu+cbms+gbms) for 50kwh-2mwh applications. In conjunction with the server and plant battery management system software, it can form a four-level architecture (bmu+cbms+gbms+bbms) for applications from 2mwh to 1000mwh to meet different projects requirements the product has a complete and reliable operation and protection strategy to effectively extend the life of the battery pack. It comes with a variety of communication interfaces and can be directly or indirectly connected to third-party energy management systems.