In early 2017, during a meeting with investors Tesla announced and Panasonic joint research and development of the new 21700 batteries start mass production, Tesla said the battery will be Giga factory super battery factory production, and to emphasize this is currently in the production of cylindrical batteries energy density is highest and the lowest cost of the product Then, the domestic enterprise poured into 21700 armies:On June 28, hundred million weft lithium can announce its 21700 battery products of Hubei province jinquan rolled off the production line, in 2019 officially put on the market;July 3, intelligent energy formally announced its 21700 battery production plans, wisdom energy will be the construction of six new 21700 product lines;On July 20, Suzhou listens gwh21700 capacity of 4Power battery The project officially put into production.