Evidence100%Authoritative
FactConfirmedProduct·January 28, 2026
4680 Cells Now Powering Production Model Y Battery Packs
Tesla has begun producing battery packs for certain Model Y vehicles using its in-house 4680 cells, with both anode and cathode dry-electrode production now occurring in Austin.
Evidence Strength
Evidence100%Authoritative
Backed by sec filing
Single publisher source
Includes official or primary source
Insights
First tracked
January 28, 2026
Last updated
January 28, 2026
Sources
1 source
Related Developments
Model Y L Six-Seat Variant Announced for Australia and New Zealand in 2026Optimus Factory Training Program Expanded at Texas GigafactoryCybercab Road Testing Ramping at Gigafactory Texas and Public RoadsFremont Factory Repurposed for Optimus Production Targeting 1M Units/YearCybercab First Unit Rolls Off Gigafactory Texas Production Line, Mass Production Expected April 2026
Sources (1)
Source Timeline
- 8-K EX-99.1 — 2026-01-28 (TSLA)SEC EDGAR·Jan 28
Evidence Strength
Evidence100%Authoritative
Backed by sec filing
Single publisher source
Includes official or primary source
Insights
First tracked
January 28, 2026
Last updated
January 28, 2026
Sources
1 source
Related Developments
Model Y L Six-Seat Variant Announced for Australia and New Zealand in 2026Optimus Factory Training Program Expanded at Texas GigafactoryCybercab Road Testing Ramping at Gigafactory Texas and Public RoadsFremont Factory Repurposed for Optimus Production Targeting 1M Units/YearCybercab First Unit Rolls Off Gigafactory Texas Production Line, Mass Production Expected April 2026