Classical EGO 650mah/900mah/1100mah battery 1.ego mega battery 2.ego tank battery 3.battery long lasting Classical EGO 650mah/900mah/1100mah battery 1.Battery Capacity & Length(3 options) 650mA/74mm,900mA/86mm,1100mA/96mm2.Outer Diamter of Battery:14.1mm3.Thread Specifications:(5 options) 510/M7*0.5mm, 4081/M8*0.75mm,750/M7.5*0.75mm, 750D/M7.5*0.75mm,808D/M8*0.5mm4.Electroplated Thread: Gold/ ...