The Semco SLB 5V 3A 8CH is a multi-channel lithium battery testing system engineered with a dual closed-loop constant current and constant voltage architecture to ensure stable and accurate control throughout the test process. Each channel operates independently using a four-wire measurement system, enabling precise voltage and current acquisition at the cell level. Supporting a wide range of charge and discharge modes—including CC, CV, CC–CV, constant power, and constant resistance—the system is well suited for formation, performance testing, and research applications. With detailed data recording, fast current response, and stable output performance, it provides reliable results for laboratories, R&D environments, and quality control operations. A higher-current 6A version is also available to meet expanded testing requirements.