Amazon.com: Fraternize 7.4V 2600mAh Rechargeable Battery Lithium li ion Batteries with XH2.54-2P Connector for Electronics, Lighting, Equipment 7.4v Battery Pack : Health & Household
18650 2600 mAh Li-ion 3.7 Volt Battery (Flat Top)
18650 Blue Lithium-Ion Rechargeable Battery - 3.7V 2600mAh | xUmp
UltraFire 2600mAh 3.7V 18650 Rechargeable BRC Lithium Battery With Pro