BYD Says Its New Battery Car Is Coming in 2027
BYD plans to sell its first car with a solid-state battery in 2027. Executive Vice President Stella Li gave that date in an interview with Carwow's Spanish outlet, where she said BYD leads in solid-state technology and bringing it to market Engadget. She was talking about a sales plan, not a lab test.
That date matches what BYD said before. In February 2025, Sun Huajun, chief technology officer of battery subsidiary FinDreams, said BYD would first show and fit these batteries in cars in 2027 and make many of them around 2030 Engadget. Small start first, big production later.
BYD is working on a sulfide type, which means the inside uses a solid material instead of liquid. Chief Scientist Lian Yubo said these batteries will go mostly in expensive models, next to the company's normal lithium iron phosphate, or LFP, batteries. The new battery will not replace LFP. It will sit above it.
The broader context here is that building one working car is very different from building thousands of batteries in factories. It is like baking a test cake in one kitchen before baking it in every store in the country. The first job is fit, cooling, battery software, crash safety, and shop repairs. The second job is making enough good batteries fast, handling tricky solid materials, joining parts cleanly, and keeping cost per unit of energy low. BYD can show a real 2027 car without solving that second job yet.
Looking at product strategy, starting with expensive cars is sensible. Buyers there can handle higher costs and fewer choices. Keeping LFP as the everyday battery keeps a trusted supply chain running. It also keeps risk small, so breakdowns, wear over time, and repair bills affect only a few cars.
In my view, the date matters less than what comes next. If BYD goes from a few test cars to repeat builds with the same design and factory tools, that will matter more than one launch car. If the 2027 car stays a one-off showpiece, that will also tell us plenty. Real learning starts when drivers use the cars every day, charge fast, drive in winter, and take them to repair shops. Lab tests cannot copy that.
