Lithium Ion Cylindrical Battery - 3.7v 2200mAh : ID 1781 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium Ion Polymer Battery - 3.7V 70mAh | TinyCircuits.com
Lithium Ion Polymer Battery - 3.7V 1500mAh
Lithium Ion Polymer Battery - 3.7V 2500mAh | TinyCircuits
3.7V Rechargeable Lithium ion Battery LP18650A+ 3500mAh With PCM and JST XHP-2 Connector
Rechargeable 3.7V 2200mAh Lithium ion battery 3.7V Li ion cells for 11.1V 12V 24V Singing machine mobile DVD player|Rechargeable Batteries| - AliExpress
Amazon.com: HXJNLDC DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics