Keep the advantages like high reliability and stable performance of the 18650 battery, the 21700 battery performance is much more improved over the 18650 in all aspects. In addition, compared to other battery models, lithium 21700 is similar to the more mature 18650 battery in terms of battery raw material selection, production process and technical processes. Therefore, the 18650 and 21700 production line can be mostly compatible, some enterprises more secure way is to do articles on the production line, the production line to 21700 and 18650 compatible close.
The pursuit of high-ratio energy has become an trends, many battery companies began to turn their attention to the layout of 21700 batteries. Some enterprises’ production lines are imported by introduce more equipments, but they are assembled on their own, so they can invest less in the cost of 18650 to 21700 conversion.
At present, The most popular model like Sanyo 21700, Sony 21700 battery vtc6a, Nitecore 21700, Panasonic 21700 battery, LG 21700, Inr21700 M50. They are already for sale. And Coremax also get ready for 21700 battery packs.