The HIOKI ST5680EOL is an all-in-one DC hipot & insulation tester designed for EOL final inspection of lithium battery production lines, integrating four core test functions: withstand voltage, insulation resistance, breakdown voltage and arc discharge detection. Equipped with 500 kS/s high-speed waveform sampling, it fully records voltage and leakage current waveforms throughout the test process, visualizing tiny insulation defects that cannot be reflected by numerical values alone. Exclusive arc detection captures transient arcs caused by foreign particles and welding burrs inside cells, accurately intercepting latent defective products to prevent vehicle fire safety hazards. The instrument supports automatic sequential program testing, with external I/O terminals for seamless PLC automatic production line connection. Test data can be mass exported and archived via USB flash drive, complying with global power battery safety standards and full quality traceability requirements, widely applied to factory safety inspection of cells, modules, battery packs and vehicle drive motors.