18650 Blue Lithium-Ion Rechargeable Battery - 3.7V 2600mAh | xUmp
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
PKCELL Flat Top 18650 3.7V 3000mAh Rechargeable Li-Ion Battery
Lithium Ion Polymer Battery - 3.7v 100mAh : ID 1570 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Li-Polymer Battery 3.7V 1500mAh
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 Battery - 1Ah - PRT-13813 - SparkFun Electronics
EBL 4-Pack 3.7V 2800mAh CR123A 16340 Rechargeable Batteries for Torch Camera Flashlight - Walmart.com
Li-ion Battery 3.7V/2000mAh – Flat - Gamasonic USA