Amazon.com: FPVERA 3.7V 1200mAh Li-ion Battery 2PCS 3.7Volt Rechargeable Batteries with USB Charger Cable SM-2P Plug for RC Car Drift Monster Truck Off-Road Vehicle Remote Control Car High-Speed Climbing Racing : Toys
Lithium Ion Battery - 3.7v 2000mAh - Walmart.com
Amazon.com: VIDAR 3.7V 6000mAh-22.2wh Rechargeable-Li-ion Battery - Premium Real Capacity Super Durability Lithium Batteries with JST 2.0/2P Plug for Electronics, Toys, Lighting, Equipment : Health & Household
Tenergy 18650 2600mAh 3.7V - Flat Top
Li-Polymer Battery 3.7V 6000mAh
Lithium Ion Cylindrical Battery - 3.7v 2200mAh : ID 1781 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits