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
LiPo Pouch Battery 785060 (3.7V, 2500mAh), 6.90 €
IMREN 25RS 18650 2500mAh 20A Battery
Amazon.com: 3.7V 2500mAh 385677 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST Connector : Health & Household