Amazon.co.jp: 1 x EEMB Lithium Polymer Battery 3.7V 1800mAh 963450 Lipo Rechargeable Battery Pack JST Connector - Check the polarity of your device and connector before purchase : Electronics
Amazon.com: Rechargeable Battery Lithium Batteries 1800MAH 3 7V Flat Top Battery for Solar Lights, Headlamps,TV Remote Control ,Wireless Mouse, Flashlight(4 Pack) : Health & Household
KP-853562 3.7v 1800mAh (Full Capacity) 1800 mAh Lithium Polymer Rechargeable Battery for Drone, FC Helicopter, DIY, Robotics : Amazon.in: Toys & Games