The Samsung 40T 21700 Battery is a powerful and reliable battery that can handle high-drain devices, such as vape mods. It has a 4000mAh capacity that can provide long runtimes and a 35A max continuous discharge rate that can deliver strong performance. The discharge rate can be further pushed to 45A for short-term (pulse) power. The battery has a 3.6V nominal voltage and a 4.2V peak voltage. The battery has a flat top style and a purple colour. The battery is compatible with devices that use 21700 batteries. The Samsung 40T 21700 Battery is a quality battery that offers both capacity and current for your vaping needs.