# CATL and SERES sign a long-term cooperation to speed up battery capacity in Chongqing beyond 20 GWh a year

Canonical page: https://technooptimist.io/stories/catl-and-seres-sign-a-long-term-cooperation-to-speed-up-battery-4c0683f0
Date: 10 Oct 2026
About: [CATL](https://technooptimist.io/companies/catl.md)
Original source: https://www.catl.com/en/news/7014.html

CATL and SERES signed a long-term strategic cooperation agreement on October 10, 2026, in Chongqing. It formalises a supply relationship that already covers all AITO models, which have delivered more than 1.2 million units to date, and commits both companies to more production capacity and to overseas expansion.

## Key facts

- Phase 2 of the 'Plant in Plant' project at SERES's Super Factory is to be accelerated, at a planned 10 to 12 GWh a year.
- Combined capacity of both phases is expected to exceed 20 GWh a year.
- The deal also covers supercharging networks and battery services, and joint pursuit of Europe, the Middle East and Central Asia.
- No financial terms, investment amounts or Phase 2 completion dates are given.

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