Tabless design
Our 21700 lithium-ion cells leverage a tabless design combined with UniverCell‘s proprietary advanced cylindrical cell architecture to deliver outstanding performance. The 21700 format offers increased capacity and power density while maintaining a compact footprint — resulting in a market-leading gravimetric energy density — ideal for applications where low weight and maximum energy are critical. With superior thermal management and minimal internal resistance, our 21700 cells ensure efficient current flow and reduced heat generation under challenging conditions. Engineered and produced in Germany, these cells are the perfect choice for demanding applications, ranging from power tools to aerospace and spaceflight missions — setting new standards in energy density, durability, and innovation.
