12V 8Ah LiFePO4 Lithium Iron Phosphate battery MCOM1 8Ah – MJ Sales, Inc.
Amazon.com: ZXLKJFN 2 Pack Battery for 3.7V 3400mAh Flat Top Battery, Rechargeable, for Flashlight, Camera, Small Fan : Electronics
Amazon.com: LCLEBM 3.6V Batteries 5500mAh High Capacity Flat top Rechargeable Batteries with Battery Case (Pack of 2) : Health & Household
Buy Wholesale China Lifepo4 12v 20ah 240wh Lithium Ion Battery Pack In Flat Shape For Solar Street Light & 12v 20ah Lithium Ion Battery at USD 40 | Global Sources
thin-lithium-ion | PowerStream
Pytes/DLG INR18650-320 Grade A 18650 6.4A Flat Top 3200mAh Battery – Liion Wholesale Batteries
18650 2200 Li-ion 3.7 Volt With PCB (Flat Top) Battery
3.7 Polymer Lithium Battery 906090 6000mah Gps Mobile Power Flat Battery Rechargeable Li-ion Cell For Tablet Mid Digital Product - Rechargeable Batteries - AliExpress
UN38.3 400mah 602040 Flat Lithium Ion Batteries For Bluetooth Headset
Source Deep cycle mini flat cell lithium li-ion small size 3.7V 501035 130mAh high capacity prismatic pouch battery on m.alibaba.com
Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh : ID 4236 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits