Compatible with: Klarus XT21X Flashlight & any device that requires a 21700 battery.
Nominal Voltage: 3.6V
Nominal Capacity: 5000mAh
Charging Hours: 5.5 hours (1000 mA charging current) 2 hours (5000 mA charging current)
Total Charging Cycles: >=500 times
Max. Discharge Current: 15A
Over Discharge Cut-Off Voltage: 2.75V
Dimensions: .85"x2.98"
Weight: 2.54 oz.