Australia's Novonix slumps after Stellantis offtake deal ends
** Shares of Australia's Novonix NVX.AX fall as much as 15% to A$0.48, their lowest since October 3 ** Battery metals and technology company says a unit of automaker Stellantis STLAM.MI has terminated its offtake agreement with co due to disagreements over product specifications, among others ** Agreement involved supply up to a target volume of 115,000 tonnes over six years ** Stock down 31.6% YTD (Reporting by Shruti Agarwal in Bengaluru) ((Shruti.Agarwal@thomsonreuters.com))