Lithium Ion Polymer Battery - 3.7v 2500mAh : ID 328 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
IMREN 25RS 18650 2500mAh 20A Battery
Vapcell K25 18650 2500mAh 20A Battery - 18650 Battery Store
BL-45F1F : 3.85v 2500mAh Li-ION battery for LG smartphones — Batteries America
Amazon.com: 3.7V 2500mAh 385677 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST Connector : Health & Household
Good Qulity Liter Energy Battery 3.7v,2500mah,603090 Polymer Lithium Ion / Li-ion Battery For Toy,power Bank,gps,mp3,mp4 - Digital Batteries - AliExpress
3.7v 2500mah Battery Li Polymer | Li Polymer Battery 505573 | Lithium Polymer Battery - Rechargeable Batteries - Aliexpress