Color Black + Yellow + Multi-Colored Brand NITECORE Model NL189 Quantity 1 Piece Material Li-ion polymer Cell Type Lithium Ion Battery Model 18650 Head Type Button Top Mark Capacity 3400 mAh Actual Capacity 3400 mAh Voltage 3.7 V Rechargeable Yes Rechargeable Times Others500 Built-in Protected Circuit Yes Over Voltage Protection Yes Short-Circuit Protection Yes Over-Charging Protection Yes Over-Discharging Protection Yes Mercury Free No Other Features With stainless steel nickel protective pad on each front shockproof antioxidant highly conductive. Certification CE UL RHoS Packing List 1 x Battery