The Battery Testing System 5V 30A–5V 200A is engineered for applications where low voltage and high current accuracy are critical. Powered by a stable AC 220V supply, the system combines high-resolution AD/DA architecture with low-noise signal acquisition to ensure clean, repeatable measurements throughout demanding test cycles. Supporting a wide range of advanced charge and discharge modes—including CC, CV, CCCV, CP, CR, pulse, and DCR calculation—the system enables detailed performance, lifecycle, and reliability evaluation of lithium and other 5 V-class cells. Fast current response, flexible long-duration step timing, and rich cut-off conditions allow accurate simulation of real-world operating scenarios. With high data logging resolution and large cycle/step capacity, it is well suited for deep battery characterization in both laboratory research and production validation environments.