Chinese 18650 Li-ion cells – Ultrafire capacity test – owenduffy.net
Test of UltraFire BRC18650 3000mAh (Red-silver)
Beware of Fake Ultrafire 18650 Batteries -
Test/Review of UltraFire BRC18650 4000 mAh (Brown-Gold) | Candle Power Flashlight Forum
Ultrafire 100% Brand New Original 18650 Battery 2200mAh 3.7V LI ion Rechargeable Battery For Flashlight E cigarette Toy|Portable Lighting Accessories| - AliExpress