Amazon.com: Ecologic Mart Lithium Ion Batteries, 3.7 Volt Rechargeable Battery, 1200mAh LiPo Battery, Reading Book Light Battery Replacement, 103040 Type with Micro JST 1.25mm 2Pin Male Connector : Health & Household
Adafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack [v1] : ID 1904 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
2S 7.4 V Lipo Parallel charging desktop jst-ph2.0 3-pin 4.0 mm battery – MakerFocus
Popular battery connector for LiPo Batteries
Amazon.com: 20Pcs 2 PIN Battery Connector Plug, Micro JST 1.25 Female to JST-PH 2.0 Male for RC Battery Charger Board : Toys & Games
Amazon.com: Ecologic Mart Lithium Ion Batteries, 3.7 Volt Rechargeable Battery, 1200mAh LiPo Battery, Reading Book Light Battery Replacement, 103040 Type with Micro JST 1.25mm 2Pin Male Connector : Health & Household
Amazon.com: 2 Packs CODDAR 380mAh 2S 7.6V 60C HV LiPo Battery with XT30 Connector for Emax Babyhawk Micro FPV Quad Racing Drone, CD2S38060HV : Toys & Games