The Type segmentation of the Lithium Battery Defect Non‑destructive Detection Equipment market distinguishes five principal technologies: X‑ray, Ultrasonic, Infrared thermography, Visual/Optical inspection, and Acoustic emission. X‑ray systems dominate due to their ability to reveal internal structural anomalies such as electrode delamination, accounting for roughly 35% of total equipment revenue. Ultrasonic tools, valued for high‑resolution flaw detection in separator layers, contribute about 22%, especially in high‑volume cell manufacturers. Infrared thermography, which captures thermal signatures of internal short circuits, represents 18% of the market, driven by its rapid scan capability for production lines. Visual/Optical inspection, leveraging high‑resolution cameras and machine‑learning algorithms to identify surface defects, holds a 15% share, reflecting its low‑cost entry barrier. Acoustic emission devices, detecting stress‑wave patterns from micro‑cracks, complete the segment with 10% of sales, primarily in niche R&D environments. Collectively, these technology sub‑types shape the overall market size by aligning equipment cost structures with the precision demands of battery manufacturers.