Ultrafire 18650 Battery Capacity Test - TheSmokinApe - YouTube
Testing 18650 Li-ion Batteries : Brian Dorey.com blog
ULTRAFIRE LED Mini Flashlight Single Mode Flashlight with 4PCS UFB22 and Charger, Waterproof Super Bright High Lumen Flashlights WF-501B - - Amazon.com
Ultrafire Blue XSL 18650 3000mAh 3.7v Rechargeable Battery, 2-Pack