Ahmedabad-based deeptech startup Naxatra Labs has raised $3 million in a pre-Series A round led by Rainmatter, with backing from founders of Paytm, Delhivery, Ixigo, Aspiring Minds, iCEM, and Ather Energy. Founded in 2021, the company plans to scale R&D, expand manufacturing to 50,000 motors a month, and grow its engineering team for EV and industrial customers.