Here comes the super max 3400mAh 18650 battery built-in protection circuit! Brand New and never been use. All tested before pack! Original Panasonic (Industrial) products Made in Japan - Brand: Panasonic - Color: Black + green - Material: Li-ion - Quantity: 2 - Model: 18650 - Top: Button top - Capacity: 3400mAh - Charging volt: 4.2V - Max charge current: 0.7C - Recommend discharge current: 1C - Discharge termination voltage: 2.5V - Protection kicks in : 2.75V and 4.2V - Over-Charging / Draining at 4.2V / 2.75V - Protection Circuit installed - Packing list: - 2 x Battery - 1 x Battery case (Please ensure your application can accept this size before order The voltage of full charge & empty condition is 4.2v & 2.75v respectively)