In order to make sure your headlamp work all the time, you should prepare a reliable and large capacity battery to it. This Rechargeable 8.4V 3000mAh 4-18650 2S2P LithiumBattery Pack is especially designed for bicycle headlamp. Made of superb material, the outer shell is solid and durable, uneasy to crack or break. Thebattery pack featuresstable and reliable performance to prevent it discharging. Besides, designed into rechargeable style, it is environmental-friendly, energy-saving and pollution-free. Coming with a cloth bag, itenables youto take along conveniently. Don’t hesitate anymore and take actin now!<!--Features --><p>FEATURES</p><ul><li> Made of high quality nylon material, it is solid in construction</li><li> With a cloth bag design for convenient carry</li><li> Rechargeable style is environmental-fiendly and energy-saving</li><li> Built-in protection circuit </li><li> Over-voltage, short-circuit, over-charging and over-discharging protection </li></ul><!--Specifications --><p>Specifications</p><table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="131"> Brand</td><td width="365"> N/A</td></tr><tr><td width="131"> Color</td><td width="365"> Black</td></tr><tr><td width="131"> Quantity</td><td width="365"> 1</td></tr><tr><td width="131"> Type</td><td width="365"> Lithium Ion</td></tr><tr><td width="131"> Model</td><td width="365"> 18650</td></tr><tr><td width="131"> Mark Capacity</td><td width="365"> 3000mAh</td></tr><tr><td width="131"> Actual Capacity</td><td width="365"> 3000mAh</td></tr><tr><td width="131"> Battery Voltage</td><td width="365"> 8.4V</td></tr><tr><td width="131"> Rechargeable</td><td width="365"> Yes</td></tr><tr><td width="131"> Rechargeable Times</td><td width="365"> 500~600 Times</td></tr><tr><td width="131"> Buitl-In Protected Circuit</td><td width="365"> Yes</td></tr><tr><td width="131"> Over Voltage Protection</td><td width="365"> Yes</td></tr><tr><td width="131"> Short-Circuit Protection</td><td width="365"> Yes</td></tr><tr><td width="131"> Over-Charging Protection</td><td width="365"> Yes</td></tr><tr><td width="131"> Over-Discharging Protection</td><td width="365"> Yes</td></tr><tr><td width="131"> Mercury Free</td><td width="365"> Yes</td></tr><tr><td width="131"> Application</td><td width="365"> 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.</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (2.60 x 1.42 x 1.42)" / (6.6 x 3.6 x 3.6)cm (L x W x H)</td></tr><tr><td width="131"> Weight</td><td width="365"> 6.67oz / 189g</td></tr><tr><td width="131"> Material</td><td width="365"> Nylon </td></tr></tbody> </table><!--Package Includes --><p>Package Includes</p><ul><li>1 x Battery Pack </li><li>1 x Cloth Bag</li></ul><!--Extra Info --><!--produts_compatibility -->