A solid-state EV battery that can achieve 800 miles of driving range — It’s becoming a reality
Why it matters: High‑energy solid‑state cells could slash EV costs while tripling range, accelerating mass adoption.
- BYD & CATL plan small‑scale solid‑state production by 2027, leveraging their 55% share of global EV battery sales.
- Dongfeng Motors reports a 350 Wh/kg prototype delivering >1,000 km (620 mi) under CLTC in extreme cold tests.
- Changan Automobile targets a 400 Wh/kg “Golden Bell” cell with >1,500 km (932 mi) range, trialing before Q3 2026.
- Chery unveiled a 600 Wh/kg prototype promising >1,500 km (932 mi) range and aims for limited testing this year, mass market by 2027.
- Factorial Energy (US) supplied 106 Ah solid‑state cells for a Mercedes EQS that drove 1,200 km (745 mi), with commercial rollout expected by 2027.
Solid‑state EV batteries, once a lab curiosity, are now being field‑tested by Chinese giants and a U.S. startup, with prototypes promising 350‑600 Wh/kg and up to 1,000 km (620‑932 mi) range. If the early trials hold up, mass production could start as soon as 2027, reshaping EV cost, range, and design.
