AC-IR & OCV Battery Performance Tester  Ⅰ Functional Overview This tester measures AC internal resistance (AC-IR) and open-circuit voltage (OCV) to accurately evaluate battery performance and safety. It is designed to ensure the quality of finished cells, modules, and battery packs through reliable and precise testing. After production, battery cells are typically transferred to module assembly facilities following outgoing inspection. However, factors such as transportation and storage time may introduce potential defects. This equipment enables essential incoming inspection before assembly, helping to identify abnormalities early and ensure consistent product quality throughout the manufacturing process. With its high accuracy and efficiency, it serves as a critical solution for quality control in modern battery production lines. Ⅱ Performance Parameters BT3561A For small cells and battery packs ≤60 V OCV range: 6 V / 60 V IR range: 30 mΩ / 300 mΩ / 3 Ω / 30 Ω / 300 Ω / 3 kΩ   BT3562A For large xEV cells and battery packs ≤100 V OCV range: 6 V / 60 V / 100 V IR range: 3 mΩ / 30 mΩ / 300 mΩ / 3 Ω / 30 Ω / 300 Ω / 3 kΩ BT3563A For large xEV battery packs ≤300 V OCV range: 6 V / 60 V / 300 V IR range: 3 mΩ / 30 mΩ / 300 mΩ / 3 Ω / 30 Ω / 300 Ω / 3 kΩ