Lithium Ion Polymer Battery - 3.7V 70mAh | TinyCircuits.com
Lithium Ion Battery - 3.7V 2000mAh : ID 2011 : $12.50 : Adafruit Industries, Unique & fun DIY electronics and kits
18650 3000mAh Li Ion Battery Cell 3.7V 3000mAh Li Ion Battery Cell
3.7V Rechargeable Lithium ion Battery LP18650A+ 3500mAh With PCM and JST XHP-2 Connector
Amazon.com: DC 3.7V 2600mah 505573 li-ion Lithium Ion Polymer Battery Replacement for DIY Tablets Battery 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics