2 A 5 V 4 in 1 charging discharge module, 18650 lithium battery charging module with battery protection, charging protection board for 3.7 V 4.2 V Li-ion battery. : Amazon.de: Automotive
Step Up Charging Module, 5 Pieces 2A Boost Module, 18650 Lithium Battery Charging Boost Discharge Module, DC 3.7V to DC 5V 9V Charging and Discharge Module : Amazon.de: Electronics & Photo
Battery charging discharge module, XY-DJ DC 6-40V charge discharge, integrated module, battery charging boost, power protection board module, overdischarge protection module with friction function. : Amazon.de: DIY & Tools
3.7V 9v 5v 2a adjustable step up module 18650 lithium battery charging discharge power module | Fruugo DK