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Repair Shop Alleges Early, Irreparable Failures in Tesla Model 3/Y LG NCM811 Batteries

The warning cites high internal resistance in LG Energy Solution Nanjing cells used in some European and Asian vehicles.

Overview

  • Croatia-based EV Clinic reports that over 90% of the LG NCM811 packs it receives cannot be repaired at the cell level due to uniform module degradation.
  • The shop’s diagnostics describe LG cells measuring around 28 mΩ when new and frequently exceeding 50–100 mΩ ACIR, which it contrasts with lower-resistance Panasonic cells.
  • EV Clinic estimates Panasonic packs last about 400,000 km and are generally repairable, while the China-made LG NCM811 packs approach end-of-life around 250,000 km.
  • Citing unsustainable repair outcomes and cascading failures after single-module swaps, the shop is charging a feasibility fee and advises owners to seek used Panasonic packs or full Tesla replacements.
  • Media reports note Tesla has not responded to requests for comment, and InsideEVs said LG Energy Solution did not provide a comment at the time of publication.