NITECORE NL189/NL1834 3400mAh Protected Rechargeable Button Top 3.7V battery
Nitecore NL1834R 3400mAh USB Rechargeable 18650 Battery
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 NL1834 18650 Rechargeable Battery 3400MAH High Capacity