Integrated battery energy storage system (ESS) equipped with lithium battery packs, PCS converters, BMS management unit and power distribution cabinet, complying with international safety standards. Available in cabinet type and containerized solutions for residential, commercial and utility-scale scenarios. Supports peak shaving, load shifting, PV energy storage, off-grid power supply and grid frequency regulation. Built-in multi-layer safety protection, intelligent monitoring platform and remote operation function. Widely matched with solar photovoltaic systems, EV charging stations and industrial microgrids. Customizable capacity and system configuration, factory direct supply for global renewable energy storage projects.