Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Automatic Solar Panel Battery Charger Board Night Light Led Lamp Control Switch Garden Street Light 3.7v 7.4v 11.1v Module - Sensors - AliExpress
Automatic Solar Panel 3.2V 3.7V Battery Charger Board Night Light Control Switch | eBay
Amazon.com: Acxico 3Pcs Solar Charge Controller Board Lithium Battery Charging Controller Auto ON/OFF Light Control Switch For DIY Street Lights Garden Lights : Patio, Lawn & Garden
How to Make a 12V Lead Acid Battery Charger with CC & CV - Share Project - PCBWay
Microcontroller Based Solar Charger - Engineering Projects
Amazon.com: Solar Lamp Controller, Solar Power Charging Module 3.7V Lithium Battery Control Circuit Board with ON/Off Light Control Switch : Patio, Lawn & Garden
Sp196 12V Solar Battery Charger PCB Board, 2A Car Charger Fast Charge Mobile Phone Charger PCB Board - China Wireless Mouse PCB Assembly, Car Charger PCB | Made-in-China.com