3000mAh NiMH Rechargeable Battery POWO18B, 3.7V Large Capacity Batteries with Case, Perfect for Flashlight, Camera, Small Fan, Doorbell, Toys, Headlamp, and Other Battery Operated (4pack, Red): Amazon.co.uk: DIY & Tools
Olight Customised 32650 6500 mAh 3.7 V Lithium-ion Battery
18650 2500mAh 3.7V Lithium Ion Battery - China Lithium Battery and Li-ion Battery price | Made-in-China.com
AWT 18650 3.7v Batteries — MyShishaPen
Rechargeable Battery 2800mAh ICR 3.7V Li-ion With Soldering Tabs - Building Controls