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,&nbsp;the Rechargeable 18650 Battery&nbsp;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>Reverse polarity / over-charge / over-discharge protection</LI><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 class=ke-zeroborder border=0 cellSpacing=0 cellPadding=0 width="100%"><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><IMG alt="" src="http://www.image-tmart.com/info_images/86011415-1.jpg"><IMG alt="" src="http://www.image-tmart.com/info_images/86011415-2.jpg"><IMG alt="" src="http://www.image-tmart.com/info_images/86011415-3.jpg"><IMG alt="" src="http://www.image-tmart.com/info_images/86011415-4.jpg"><IMG alt="" src="http://www.image-tmart.com/info_images/86011415-5.jpg"><!--Package Includes --><p>Package Includes</p><UL><LI>2 x 18650 Batteries</LI></UL><!--Extra Info --><!--produts_compatibility -->