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
Lithium Ion Polymer Battery - 3.7V 70mAh | TinyCircuits.com
Lithium Ion Polymer Battery - 3.7V 500mAh | TinyCircuits.com
PKCELL Flat Top 18650 3.7V 3000mAh Rechargeable Li-Ion Battery
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
Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh : ID 4236 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Cylindrical li ion battery 18650 3.7V 2000mAh rechargeable battery pack - VATS BATTERY
4400mAh 3.7 volt Lipo Battery LP106065 UL1642 | Polybattery.com
Amazon.com: AKZYTUE 3.7V 700mAh 603035 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector : Health & Household
Amazon.com: HXJNLDC DC 3.7V 2100mAh 804050 li-ion Lithium Ion Polymer Battery Replacement for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics