Nitecore
Nitecore NL186 Li-ion reachargeable 2600mAh 18650 battery
18650 Li-ion Rechargeable Battery 2600mAh 3.7V 9.6Wh Ultimate Performance, Accept No Substitute Integrated battery overcharge / discharge protection circuits High discharge performance Li-ion Rechargeable Battery middot; More than 500 charge-discharge cycles.