On the eve of the 2026 Beijing Auto Show, ARCFOX officially announced that its ARCFOX S3 will join CATL’s battery swap system, becoming the first mass-produced model from BAIC ARCFOX to support battery swapping. Arcfox S3 opens pre-sale at Beijing Auto Show It should be noted that on April 15, ARCFOX released the first teaser images and some specifications of the S3 for the first time. The ARCFOX S3 is positioned as a mid-size pure electric family sedan, with dimensions of 4,916 mm × 1,900 mm × 1,480 mm (L×W×H) and a wheelbase of 2,876 mm. In terms of exterior design, the S3 features a closed-off front fascia with split headlights and a segmented full-width LED daytime running light strip. The side profile adopts a fastback coupe silhouette, paired with five-spoke wheels and semi-concealed door handles. The rear end is equipped with a full-width taillight cluster, which also integrates a deployable electric spoiler. According to the official announcement, after the battery swap version is connected to CATL’s Choco-Swap network, the battery swapping process can be completed in as fast as 99 seconds. Additionally, the new model is expected to be powered by a 159 kW drive motor, equipped with a 54 kWh battery pack, delivering a pure electric range of 535 kilometers. CATL Tech Day BAIC and CATL have a long-standing partnership in the field of battery swapping. In June 2024, the two parties signed an agreement on skateboard chassis and battery swap vehicle development, laying the technical foundation for subsequent model launches. Since then, BAIC ARCFOX has continued to advance the research, development, and homologation of battery swap models as a “Choco-Swap Ecosystem Partner” of CATL. At the 2025 Shanghai Auto Show in April, CATL announced the joint launch of 10 Choco-Swap models with FAW, Changan, BAIC, Chery, and GAC, including the BAIC ARCFOX S3. CATL Tech Day On April 21, CATL held its Super Tech Day in Beijing, unveiling its integrated ultra-fast charging and battery swap all-scenario energy replenishment network plan, providing a clearer roadmap for the future landscape of battery swapping. Regarding network co-construction, CATL will work with its first batch of partners—including Changan, Chery, GAC, Seres, SAIC-GM-Wuling, and BAIC—to jointly build a “Super-Swap Shared Network,” with plans to establish over 100,000 shared energy replenishment facilities by the end of 2028. In terms of battery products, the simultaneously launched Choco-Swap 26 battery is built on an 800V high-voltage architecture. The initial 75 kWh version is designed for B- to C-class vehicles, with larger capacity versions to be introduced in the future to achieve full coverage from A0- to C-class models.