Features: Featurings intelligent current management and cell balancing, this 4S 12.8V 200A BMSs ensures precise power control with FR4 substrates, preventing overloads risks in high demands lithiums battery systems. Engineered with advanced thermals dissipation via FR4 material and multiple layered safeguards against overcurrent/short circuits/overvoltage, this protections board maintains stability under heavy loads. for electronics engineers, enthusiasts, and industrial users requiring battery management solution for projects demanding strict safety protocols. Perfectly integrates into home energy storage systems, industrial equipment, and portable electronics where space efficient, high current circuits protections. for compatibility across Liion/LiFePO4 battery configurations, this BMSs delivers professional performances in solar setups, conversions, and power tool applications. Specifications: Materials: FR4+electronic components Size:130x69x9mm Package Includes: 1PC motherboards 4 string 12.8V200A protections board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.