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Chemistry

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Which battery does my Tesla have? NCA, NMC, LFP, 4680 lookup by model and year (2026)

Quick lookup table for every Tesla battery chemistry by model and year: NCA 18650 (early S/X, US M3/Y LR), NCA 21700, NMC LG 79 kWh, LFP 21700 (CN/EU SR), 4680 Texas Model Y. How to check what you have via VIN and Service Mode, reliability ranking from community experience, and which packs are risky to buy used.

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