18650 Nitecore Rechargeable Battery NL1834 3.7v 12.6wh – Battery World
EdisonBright Bundle: Nitecore HC60 1000 Lumens CREE XM-L2 U2 LED headlamp with Two Genuine Nitecore NL189 3400mAh Li-ion Rechargeable Batteries and Two CR123A Lithium Batteries - Amazon.com
Nitecore NL1835R 18650 Battery - USB Charging Port | Battery Junction