E-plane

Liminal is a developer of ultrasound and machine learning inspection solutions for battery manufacturing quality control. The company's EchoStat platform combines ultrasound technology with custom-trained machine learning models to deliver fast, non-destructive inspection of prismatic, pouch, and cylindrical cells across all chemistries. The platform offers off-line, at-line, and in-line solutions including EchoStat Array for high-speed inspection of 100% of cells in six seconds per cell, EchoStat Raster for high-resolution inspection in 15 minutes or less, and EchoStat Theta for cylindrical cell analysis. EchoStat delivers actionable insights including electrolyte saturation quality, cell performance prediction, defect detection and classification, and cell uniformity analysis. The platform supports cell and process development, factory ramp-up, high-volume manufacturing, and factory expansion use cases. Founded in 2015 and headquartered in Emeryville, California, with operations in Ann Arbor, Michigan, Liminal has raised $38.9 million in Series A funding from investors including Good Growth Capital, Chrysalix Venture Capital, ArcTern Ventures, Helios Climate Ventures, Elemental, and UTEC.