Amazon.com: Galaxy SHENMZ 2 Pack Battery for 3.7V 3400mAh Flat Top Battery, Rechargeable, 2 Bay USB Battery Charger for Flashlight, Camera, Small Fan, Sound Equipment.… : Electronics
Amazon.com: 3.7V 5000mAh 2 Cell Lithium ion 18650 18.5Wh Rechange Battery Pack with 2 Pin MTA-100 Connector : Health & Household
Amazon.com: 3.7V 5000mAh 2 Cell Lithium ion 18650 18.5Wh Rechange Battery Pack with 2 Pin MTA-100 Connectors : Health & Household
4-Pack of ICR 18650 Blue Lithium-Ion Rechargeable Batteries - 3.7V 2600mAh | xUmp
18650 Protected Button Top battery Panasonic-Orbtronic (FREE Battery Holder) 3400mAh