All you need to know about the 3.7V lithium ion battery-Tycorun Batteries
Lithium Ion Cylindrical Battery - 3.7v 2200mAh : ID 1781 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Tenergy 14500 Unprotected Li-Ion Flat Top Battery
18650 Li-ion Rechargeable Battery For MT10, MH10, H8R, P7R | Ledlenser USA
Amazon.com: EEMB 3.7V Lipo Battery 300mAh 602030 Lithium Polymer ion Battery Rechargeable Lithium ion Polymer Battery with JST Connector Make Sure Device Polarity Matches with Battery Before Purchase!!! : Health & Household
Lithium Ion Battery - 1Ah - PRT-13813 - SparkFun Electronics
PKCELL Flat Top 18650 3.7V 3000mAh Rechargeable Li-Ion Battery
3.7V Rechargeable Lithium ion Battery LP18650A+ 3500mAh With PCM and JST XHP-2 Connector
Watson Lithium-Ion Battery Pack (3.7V, 1800mAh) for HD B-1801
Amazon.com: EBL 3.7V Li-ion Rechargeable Batteries 3000mAh 18J Rechargeable USB Lithium Battery for Flashlights, Headlamps, Doorbells, RC Cars (2 Pack) : Health & Household
Amazon.com: EEMB Lithium Polymer Battery 3.7V 1500mAh 103050 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase : Health & Household
Li-Polymer Battery 3.7V 3000mAh
Lithium Ion battery - 3.7V 4400 mAh
EBL 4-Pack 3.7V 2800mAh CR123A 16340 Rechargeable Batteries for Torch Camera Flashlight - Walmart.com
Lithium Ion Polymer Battery - 3.7v 100mAh : ID 1570 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits