LG HG2 (18650) Li-ion, Continuous Discharge Rating (CDR) 20A, Rated3000mAh.  

NOTE: Lithium-Ion Batteries are extremely powerful and can be hazardous if misused or mishandled incorrectly. Always make sure that the wrap on the battery is fully in tact and no rips or tears are apparent. Also the battery insulator must be in place and should not be used if it is not present or damaged in any way.  Never exceed the manufacturers stated (CDR) continuous discharge rating.