we chronically supply lithium-ion cylindrical 18650 battery cells, include sanyo,panasonci,sony,molicel,lg chem,samsung sdis. product name : panasonic lithium-ion rechargeable battery. model : panasonic cgr18650a . norminal capacity : 2000mah . nominal voltage : 3.6 v . diameter : max 18.5+0/-0.7mm . height : max 65.0/-1.0mm . weight(typical) : 43 g . after a fresh battery has been charged at constant voltage/constant current (4.2 v, 1190 ma (max), 2 hours, 20¡ãc), the average of the capacity (ending voltage of 3 v at 20¡ãc) that is discharged at a standard current (370 ma). features: high energy density, high capacity, light weight, high power (wide temp.range), over 500 cycles, cylindrical and prismatic styles.