The Samsung INR21700-50E li-ion battery is one of the most powerful and reliable cells available in the 21700 size, and boasts a 5,000mAh capacity that’s sure to keep your electronic devices running longer. The battery is often used for consumer-devices that require a high discharge rating, and are often built into small 21700 battery packs. The ICR chemistry should always be used with protective circuitry.Quick SpecTechnology: Li-ionCapacity: 5000mAhForm Factor: 21700Min. Capacity: 4753mAhNominal Voltage: 3.6V – 3.7VEnd-of-charge Voltage: 4.2VEnd-of-discharge Voltage: 2.5VMax. Current Output Constant: 9.8AMax. Current Output Pulse: 14.7ACharging Current: 2.45AMax. Charging Current: 4.9ANo Protection CircuitPositive Pole (structure): flat topDimensions: 21.2 x 70.7mmNet Weight: 70g