Changan is linking its big range claim to a big number on energy density. The company reportedly says its solid state battery reaches 400 Wh per kg, which is the kind of figure that instantly changes packaging, weight, and how far an EV can realistically go. Changan reportedly calls the pack Golden Bell and claims it is 70 percent safer than a conventional EV battery. It also reportedly bakes in artificial intelligence for remote diagnostics (because in 2026, even battery packs are expected to act like connected devices). Changan is said to be developing and building these batteries under a new Jingzhongzhao solid state battery brand, while also planning to produce liquid and semi solid options alongside fully solid state packs.

Changan is not moving in isolation, and that is what makes this feel different from the usual lab hype. Dongfeng Motor reportedly began testing its own solid state battery in extreme cold weather, with an energy density claim of 350 Wh per kg and a range claim above 1,000 km. Reports also suggest Dongfeng wants production rollout this year, targeting September. Beyond that, a long list of players are chasing similar gains, including BYD, Chery, SAIC, GAC, and CATL, plus major global brands like Mercedes Benz, Volkswagen, BMW, Toyota, Nissan, Hyundai, and Honda. The common thread is simple: if solid state batteries land even part of their promise on safety, density, and real world driving range, the next wave of EVs will feel less like a compromise and more like the default.