Amazon.com: DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
Lithium Ion Polymer Battery - 3.7V 290mAh | TinyCircuits.com
Lithium-Poly Battery (3.7V)
Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh : ID 4236 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium Ion Polymer Battery - 3.7V 500mAh | TinyCircuits.com
EBL 4-Pack 3.7V 2800mAh CR123A 16340 Rechargeable Batteries for Torch Camera Flashlight - Walmart.com
Lithium Ion Battery Pack - 3.7V 4400mAh
Lithium Ion Polymer Battery - 3.7v 1200mAh
Amazon.com: EEMB 3.7V 2000mAh 103454 Lipo Battery Lithium ion Polymer Battery Rechargeable Lithium Polymer ion Battery with JST Connector Make Sure Device Polarity Matches with Battery Before Purchase!!! : Health & Household
PKCELL Flat Top 18650 3.7V 3000mAh Rechargeable Li-Ion Battery