The Fogstar Energy 21700 Battery is a premium, high-performance power source designed for high-drain devices, offering both reliability and efficiency. With an impressive 4000mAh capacity, it ensures extended usage, making it ideal for vapers and tech enthusiasts alike. Engineered to handle demanding applications, it boasts a Maximum Discharge Rate of 40A, ensuring consistent and powerful output. The Nominal Voltage of 3.6V and Maximum Voltage of 4.2V provide stable performance across a range of devices.

• 21700
• 4000mAh Capacity
• 40A Maximum Discharge
• 3.6V Nominal Voltage
• 4.2V Maximum Voltage