The Tenpower 21700 40TG battery is a high-performance energy source, featuring a capacity of 4000mAh and a discharge rate of 35A, making it perfect for e-cigarettes, high-powered flashlights, and other demanding devices. This lithium-ion battery ensures stable operation and a long lifespan, allowing users to enjoy uninterrupted performance from their gadgets. With the Tenpower 21700 40TG, you gain reliability and convenience in one product. Don’t miss out on enhancing your device's performance—get yours today!