The UltraFire USB Micro Rechargeable 18650 Lithium-ion Battery 3400mAh provides power to lithium-powered devices at a low cost. With full 3400mAh large capacity, it offers a long battery life. This high density battery features 800mA constant current and 4.2V constant voltage, with large charging current up to 1000mA. Built-in protection board protects both battery and device against unexpected damages. Compared to traditional alkaline batteries, it has no memory effect and much longer life of charge-discharge recycling. Click and order now! It surely is a wise choice!<!--Features --><p>FEATURES</p><ul><li> Provide power to lithium-powered devices at a low cost</li><li> Full 3400mAh large capacity, low internal resistance</li><li> 800mA constant current, 4.2V constant voltage</li><li> Large charging current up to 1000mA</li><li> Built-in protection board protects both battery and device</li><li> High density, no memory effect, long life of charge-discharge recycling </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"> UltraFire</td></tr><tr><td width="131"> Battery Type</td><td width="365"> 18650 Lithium-ion Battery</td></tr><tr><td width="131"> Rechargeable</td><td width="365"> Yes</td></tr><tr><td width="131"> Protection Board</td><td width="365"> Yes</td></tr><tr><td width="131"> Rated Capacity</td><td width="365"> 3400mAh</td></tr><tr><td width="131"> Actual Capacity</td><td width="365"> 3400mAh</td></tr><tr><td width="131"> Rated Voltage (Standard Voltage)</td><td width="365"> 3.7V</td></tr><tr><td width="131"> Charging Time</td><td width="365"> 4-5 hours</td></tr><tr><td width="131"> Max Charging Voltage</td><td width="365"> 4.30÷0.05V</td></tr><tr><td width="131"> Stop Charging Current</td><td width="365"> End Condition (Cut Off) 50mA</td></tr><tr><td width="131"> Constant Current</td><td width="365"> 800mA</td></tr><tr><td width="131"> Constant Voltage</td><td width="365"> 4.2V</td></tr><tr><td width="131"> Max Charging Current</td><td width="365"> 1000mA</td></tr><tr><td width="131"> Discharge Time</td><td width="365"> 8-10 hours</td></tr><tr><td width="131"> Discharge Current</td><td width="365"> 5-6.3A</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (3.07 x 0.71 x 0.71)" / (7.8 x 1.8 x 1.8)cm (L x W x H)</td></tr><tr><td width="131"> Weight</td><td width="365"> 3.42oz / 97g </td></tr></tbody> </table><!--Package Includes --><p>Package Includes</p><ul><li>1 x 18650 Battery</li></ul><!--Extra Info --><!--produts_compatibility -->