10 PCS 180mAh 3.7V Lipo Polymer Li Rechargeable Battery For Mp3 Bluetooth 601230 | eBay
3.7v 1800mah Lithium Polymer Rechargeable Battery With Jst 1.25mm 3pin Connector For Mp3 Camera Gps 803450 Corsair Void Pro - Rechargeable Batteries - AliExpress
Amazon.com: DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics