Lithium Ion Polymer Battery - 3.7v 2500mAh : ID 328 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
New Style 785060 2500mAh Lipo 3.7V Ultra Thin Lithium Polymer Battery for etc - China Polymer Battery, Lipo Battery | Made-in-China.com
Lumenier 2500mAh 3s Radio Transmitter Lipo Battery (JR, Futaba, FrSky)
3.7v 2500mah Lithium Polymer Lipo Rechargeable Battery Cells Power For Pad Gps Psp Vedio Game E-book Tablet Pc Power Bank 405080 - Digital Batteries - AliExpress