NEW 4pcs UltraFire ICR 123A 16340 800mAh 3.0V Rechargeable Li-ion Batteries with Dual Slot Smart charger 4pcs Ultrafire ICR 123A 16340 3.0V Rechargeable Li-ion Battery Size:16.2(dia.)x34mm; Voltage: 3.0V ;Capacity: 800mAh;Color:Green The voltage of full charge and empty condition is 3.6v and 2.0v Respectively. Dual Slot Smart charger:Input:AC100-240V 47-63HZ; Output:3.7v/500mA Ease to use,Red indicator when charging, Green indicator when 2 batteries are fully charged.