USB LiIon/LiPoly charger [v1.2] : ID 259 : $12.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Battery Charger PCB, Charge Current: 700ma- 1 A
a2zteco 12V/24V Lead Acid Battery Smart Charger PCB/Circuit Board DIY Kit, Including Cables and Crocodile Clips with LCD Display Meter (10.5 x 12.5 cm) : Amazon.in: Home Improvement
MakerFocus 4pcs Dual USB 5V 1A 2.1A 18650 Battery Charger PCB Module B
3A Polymer Ternary Lithium Battery Charger Board 5V to 4.2V 4.35V Quick Fast Charging PCB Power Module IP2312 CC CV Type C USB|Replacement Parts & Accessories| - AliExpress