Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: FPVERA 2PCS Drone Batteries 3.7V Lipo Battery USB Charger and 650mAh Lipo Battery with Battery Charger for SYMA X5 Serial UAV Drone Quadcopter Rechargeable Battery : Toys & Games
Amazon.com: E-outstanding 3.7V Lithium Battery Balance Charging Line USB to XH2.54 Connector and XH2.54 to JST Convert Line for RC Aircraft Drone : Health & Household
3.7V Bego Battery Charger - Dual USB - FNDN
2S 7.4V USB Battery Charger - 3 Pins Version – WPL RC Official Store
18650 Charger For 3.7V Li ion Battery 10440 14500 16340 16650 14650 18650 Rechargeable Battery Charger Short Circuit Protection|Chargers| - AliExpress
RC Micro JST PH 2.0 Connector 2 Pin 3.7v Lipo USB Battery Charger - UK Seller | eBay
Streamlight - Battery Chargers; Battery Size Compatibility: 3.7V; Battery Chemistry Compatibility: Lithium-Ion; Charging Time (Hours): 3.50; Charging Time (Minutes): 210; Maximum Number of Batteries: 2; Voltage: 3.70; Includes: 120V AC Adapter; USB