Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh : ID 3898 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
3.7 V Li-Ion Rechargeable Battery
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
Amazon.com: 4 Pcs ICR 10440 Rechargeable Lithium Ion Battery,3.7v Batteries 350mAh (0.39 * 1.73 inch, Shorter Than AAA Size) : Health & Household
Amazon.com: PKCELL ICR17500 Battery 3.7V 1100mah A Size Lithium Rechargeable Batteries with Flat Top 2pcs(They are not 1865mm Size Battery) : Health & Household
Amazon.com: sea Jump 5PCS 3.7V 400mAh Li Battery with 5in1 Charger for SYMA Q11 H99W H31 H6C H98 TR-C385 TR-P51 TR-F22 Quadcopter Parts Aircraft Model Drone Battery AT-96 : Toys & Games