China may have just had multiple breakthroughs in EV battery technology with new solid-state battery tech that could offer more than 600 miles of range and weigh at 220 lbs. For reference, batteries typically used in Tesla Inc. (NASDAQ:TSLA) models weigh well over 1,200 lbs.A solid-state battery uses a solid electrolyte instead of a typical liquid-based solution, which can result in a more compact size, tighter packaging, better safety, as well as faster charging.Chinese Researchers Develop "Special Glue"Ac ...