Original Battery for Klarus flashlight -- Perfectly compatible with Klarus flashlights. Flashlight Type: Klarus XT11X, E1 , XT11, XT11GT, XT30R, XT12GT, XT2CR, AR10, G10, ST15R, ST10, 360X1, 360x3 Unbelievable Power Klarus 18650 Li-ion may be the most powerful battery we've ever seen. With a button top 3600mAh capacity, this protected cell will keep any device running for ages. The Klarus 18GT-36 18650 Li-ion battery is so powerful that it is even featured in Tesla electric cars! Specifications:? Battery Size and Type: 18650 button top Battery Chemistry: Li-Ion Nominal Voltage: 3.6V Nominal Capacity: 3600 mAh Protected: Yes Overcharge Over-discharge Short circuit Overheating Weight: 1.83 oz/52 g Length: 2.74" (69.6mm) Diameter: 0.725" (18.4mm) Max Continuous Discharge: 7A Recommended Charging Current: 2A Max Charging Current: 3.6A Working Temperature: -10 to 60? C Charge Cycles: 500 Safety Certifications: CE, ROHS