Amazon.com: HXJNLDC DC 3.7V 2600mAh 903759 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
PN Racing Extreme Power 555mah Li-Ion 3.7V Rechargeable AAA
Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh : ID 3898 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium-Ion Polymer (LiPo) Battery (3.7V 1000mAh) in Canada Robotix
3.7V 18650 lithium battery 1200-3500mah for Bluetooth speaker singing machine flashlight K5 disinfection gun hair clipper - AliExpress
Lithium Ion Polymer Battery - 3.7v 500mAh : ID 1578 : $7.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com : Synergy Digital SDNP60 Lithium-Ion Battery - Rechargeable Ultra High Capacity (3.7V 1900 mAh) - Replacement for Fuji NP-60, Pentax D-L12, Kodak KLIC-5000, Samsung SLB-1037 Batteries : Digital Camera Batteries : Electronics
Li-Ion 3.7V/4000ma - Gamasonic USA
Arlo Certified: Tenergy 3.7V Arlo Battery Fast Charger and 650mAh RCR123A Li-ion Rechargeable Batteries for Arlo Wireless Security Cameras (VMC3030/3200/3330/3430/3530), UL UN Certified, 4-Pack - Walmart.com