What is a 21700 battery? The origin and advantages of 21700 battery

What is a 21700 battery? What is a 21700 battery? The meaning of the 21700 battery specifically refers to a cylindrical battery with an outer diameter of 21mm and a height of 70.0mm. Companies in South Korea, my country, the United States and many other countries are using this model. Currently, XTAR has two 21700 batteries on sale, namely 217004200mAh and 217003750mAh. The 217005000mAh with larger capacity will be launched soon. From the beginning of the 21700 battery to the emergence of the 21700 battery, Tesla has to be mentioned. The 21700 battery was first developed by Panasonic for Tesla. At the investor meeting on January 4, 2017, Tesla announced the start of mass production of the new 21700 battery jointly developed by Tesla and Panasonic. This battery will be produced at the Gigafactory super battery factory. Tesla CEO Musk said that the power density of the 21700 battery is currently the world's highest energy density and lowest cost battery, and the price will be more approachable. On July 28, 2017, the first Tesla Model 3 equipped with 21700 batteries was delivered, becoming the first 21700 pure electric passenger car in the world, with a minimum price of 35,000 US dollars. The emergence of 21700 batteries made Model 3 a Tesla The most affordable model to date. It can be said that the Tesla Model 3 fully uses the 21700 battery, opening a new stage of increasing the capacity of cylindrical batteries. Advantages of 21700 battery Industry analysts analyze: The energy density of 21700 battery is higher than that of the well-known 18650 battery. The number of single cells in use can be greatly reduced, and the cost will be reduced after grouping. Model 3's 21700 battery system has an energy density of about 300Wh/kg, which is more than 20% higher than the original 18650 battery used in ModelS, with a 35% increase in cell capacity and a 9% reduction in system cost. From the very beginning, the huge advantages of 21700 have aroused widespread concern and research in the industry. It is conceivable that a 18650 battery has a capacity of about 2600-3600 mAh, and a 21700 battery supports more than 4000 mAh. At present, 217005000mAh has appeared on the market. The larger capacity is more conducive to extending the battery life of modern equipment. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the characteristics of lithium ion batteries for medical instruments?