BYD Confirms 2027 Solid-State Battery Debut, Starting With the Yangwang U9 Flagship

BYD Confirms 2027 Solid-State Battery Debut, Starting With the Yangwang U9 Flagship

September 14, 2026 · BYDACC News

BYD has set a clear timeline for its next battery revolution. Senior Vice President Li Ke confirmed in a Spain interview that BYD will launch its first all-solid-state battery vehicle in 2027, with first units likely going to the Yangwang U9 supercar flagship. The cell uses sulfide solid-electrolyte chemistry, packs 400 Wh/kg energy density — roughly double today's Blade Battery — and has delivered a prototype CLTC range of 1,218 km. It adds 500 km of range in 10 minutes and still releases 85% capacity at -30°C. Nail-penetration safety tests passed without fire or explosion, with thermal-runaway threshold pushed to 300°C.

L3 Autonomy Countdown

Li also said China's L3 autonomous-driving regulation is expected to take effect in July 2027. The new national standard GB 44721-2026, published this July, makes L3/L4 safety requirements mandatory, shifting legal liability from the driver to the manufacturer when the system is active. BYD has already promised to underwrite insurance costs for its intelligent parking and city-pilot functions.

From Pilot Line to Premium Debut

Behind the 2027 launch are two production footprints: a 2 GWh pilot line in Shenzhen Pingshan that began operation in February 2026, and a 20 GWh mass-production line in Chongqing Bishan expected to break ground this quarter. BYD's internal target is cost parity with liquid batteries around 2030, so the 2027 debut will be a small-batch, premium-only showcase rather than a mass-market rollout, with mainstream Dynasty and Ocean-series models staying on second-generation Blade Battery packs for several more years.

"Battery technology is one of BYD's core competencies. To prove that, next year we will introduce our first model with a solid-state battery." — Li Ke, BYD Senior Vice President, September 2026

Why It Matters

This is the first time a top-three global EV maker has put a firm model-year date on a true, sulfide-based solid-state battery car — not a semi-solid or hybrid pack. Rivals including Toyota, Samsung SDI and CATL have mostly pushed mass-market solid-state timelines toward 2028-2030. If BYD ships even a limited-run Yangwang U9 with the promised specs next year, it claims a technical halo that set the pace for the industry's next battery transition.

Sources