4400mAh 3.7 volt Lipo Battery LP106065 UL1642 | Polybattery.com
Amazon.com: HXJNLDC DC 3.7V 1300mAh 503759 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Health & Household
Lithium Ion Polymer Battery - 3.7v 100mAh : ID 1570 : Adafruit Industries, Unique & fun DIY electronics and kits
3.7V Polymer Lithium Ion Battery for Rocketry Electronics