On October 27, 2026, CATL reportedly told investors that its all-solid-state battery development had moved from a 10 Ah-class validation platform to trials of 20 Ah samples. CarNewsChina attributed the cell-stage detail to Y-Auto. The reported step marks progress in development, while CATL’s next production milestones remain future targets.
What the 20 Ah samples mean
Amp-hours (Ah) measure a cell’s electric-charge capacity. The reported move from a 10 Ah-class validation platform to 20 Ah sample trials describes a change in the cells under development, not a vehicle performance result.
Production targets, not a vehicle launch date
Reports put CATL’s target for small-batch production in 2027 and its plan for large-scale manufacturing around 2030. These are manufacturing milestones; they do not give a date for a consumer vehicle using the cells.
The program is also reported to target an energy density of about 500 Wh/kg. Energy density measures energy relative to mass. That cell-level target is distinct from a vehicle’s driving range, which is a vehicle-level result.
Engineering hurdles in solid-state cells
For solid-state batteries that use sulfide materials, maintaining contact between solid components is one engineering challenge. Electrodes expand and contract during charging and discharging, which can disrupt that contact. Sulfide materials also require moisture control because reactions involving them can release toxic hydrogen sulfide. Durability, manufacturing yield, cost, safety and real-world performance are further development considerations.
