Specification:<br />Product name: Olight 3.7v 650mAh RCR123A Rechargeable Battery <br />chemical substances: Lithium-ion<br />Capacity:650mAh<br />Voltage: 3.7v<br />Maximum Charge Current: 650mA (1C)<br />Maximum Discharge Current: 1500mA (2C)<br />Charging current: 325mA(0.5c)<br />Battery life: charging about 500times<br />Weight: 16g<br />Size: 16.8mm x 33.7mm (length x diameter)<br />Quatity: 1<br /><br />Note: The size of RCR123A is the same as 16340 battery<br /><br />Package included:<br />1 x Olight 3.7v 650mAh RCR123A Rechargeable Battery