Panasonic 18650 Li-ion rechargeable battery, the real capacity of 3100mAh-industrial strength. Made in Japan. Made by Panasonic Industrial Division.
Energy density 675 Wh/L . Nominal voltage 3.6V, 3.7V. Unlike any other li-ion cell, Panasonic NCR18650A can be discharged to as low as 2.5V. Flashlight, laser pointer, personal vaporizer, or any other 18650 li-ion battery operated device will run better, and much longer with NCR18650A Panasonic high capacity batteries.