UltraFire 5000mAh 3.7V 26650 Rechargeable BRC Lithium Battery with Pro
UltraFire FLB 18650 3000mAh 3.7V High-Capacity Protected Lithium Ion (Li-ion) Button Top Battery - Priced Per Cell
PSA: This is why you should avoid Ultrafire and sketchy Chinese batteries. There's no protection circuit, despite their claim, and their advertised capacity is 9 times what they're capable of. : r/flashlight
Ultrafire 18350 1200mah 3.7v BUTTON TOP Rechargeable Lithium Battery
UltraFire 2PCS 18650 3600mAh 3.7V rechargeable protection lithium-ion battery protection 18650 lithium battery 2 flashlights - Price history & Review | AliExpress Seller - UltraFire Official Store | Alitools.io
Test/Review of UltraFire BRC18650 4000 mAh (Brown-Gold) | Candle Power Flashlight Forum
Generic 2 Pieces Ultrafire 3.7vLi-ion Rechargeable Battery price from jumia in Kenya - Yaoota!