ABD4800R is a rechargeable protected 4800mAh battery, which is compatible with the most flashlights and other electronic powered by 21700 Li-ion battery, Utilized 1 x 4800mAH battery cell, and its time of charge can reach about 500 times. It enjoys a long battery life. 1. Utilized 1 x 4800mAh battery cell 2. time of charge can reach about 500 times Specification: 1. Specification: 21700 2. Capacity: 4800mAh 3. Voltage: 3.7V 4. Max current: 20A 5. Weight: about 80g 6. Times of charge: 500 7. Recommended usage temperature: -10?~60?