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Tesla range drops 52 km after switching to in-house 4680 battery cells in European Model Y

Tesla’s in-house 4680 battery cells in some European Model Y trims have been criticised for weaker performance than previous supplier batteries. Battery capacity fell versus the earlier LG Energy Solution pack, cutting WLTP range from 661 km to 609 km. Reports also cited slower fast-charging and lower energy density than Panasonic’s 2170 cells. L&F reported a sharp reduction in a cathode-material contract for 4680 batteries.