This is a high-performance, intelligent BMS (Battery Management System) independently developed by ONESUN. Specifically optimized for photovoltaic energy storage systems, it strikes a perfect balance between safety, stability, and intelligent management capabilities. Structurally, the product features a compact, integrated layout with clearly defined interface zones; it supports the connection of 7–16 series LFP battery systems, allowing for flexible adaptation to a wide range of residential and commercial/industrial energy storage scenarios, thereby significantly enhancing system integration efficiency and ease of installation. In terms of performance, the product incorporates built-in 3A active balancing technology. Compared to traditional passive balancing methods, this technology substantially improves cell consistency management, effectively extending the overall cycle life of the battery pack while supporting charge and discharge currents of up to 200A to meet the demands of high-power loads.