Amazon.com: 11.1V 2600mAh 3 Cell Lithium ion 18650 28.86Wh Rechange Battery Pack with 2 Pin MTA-100 Connectors (Battery and Charger Kit) : Electronics
Amazon.com: HXJNLDC DC 3.7V 5000mAh 955565 li-ion Lithium Ion Polymer Battery Replacement for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
Lithium Ion Polymer Battery - 3.7v 100mAh : ID 1570 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: Interstate Batteries Power Patrol CR123A 3V Lithium Battery (40 Pack) 3 Volt 1.55mAh Lithium-ion Batteries (PHO0018) Film, Digital Cameras, Camcorders, Flashlights : Electronics
Factory/Manufacturer UL/PSE/CB/Kc/MSDS/Un38.3 Rechargeable Li Ion 3.7V 2600mAh 9.62wh Li-ion 18650 Lithium Ion Battery Cell Pack with PCM Wires Connector - China Lithium Battery and 18650 Battery