This paper focuses on the use of lithium-ion batteries in single-use e-cigarettes, examining their material composition and impact on the waste of critical raw materials. Lithium-ion secondary batteries are currently the most widely used battery type worldwide. Their development has paved the way for a variety of applications, including drones, smartphones, and electromobility. It has been discovered that secondary lithium-ion cells, which contain valuable materials, are being used in single-use applications. The consumption of these single-use e-cigarettes, which employ lithium-ion cells with a potential lifespan of several hundred cycles if reused, leads to the waste of critical and strategic raw materials in the Czech Republic alone. These discarded materials could have been used to manufacture several thousand batterypacks for electric vehicles annually.