Brand N/A Color Black Material Nylon Quantity 1 Type Lithium Ion Model 18650 Mark Capacity 3000mAh Actual Capacity 3000mAh Battery Voltage 8.4 V Rechargeable Yes Rechargeable Times 500~600 times Buitl-in Protected Circuit Yes Over Voltage Protection Yes Short-circuit Protection Yes Over-charging Protection Yes Over-discharging Protection Yes Mercury Free Yes Application 3000mAh 8.4V 8 x 18650 battery pack for bicycle light (2S2P); Charging interface: 5.5 x 2.1mm; Power supply for SKU 184801 / 82510 / 177268 etc bicycle light or headlamp. Packing List 1 x Battery pack 1 x Cloth bag