Yoolox may have solved portable wireless chargers with suction cups - The Verge
YOOLOX 10k test - power bank with Qi charging function
YOOLOX 10k - 2nd Generation - Wireless Power Bank - 1000 mAh, 18 W Fast Charge, USB C, Wireless Charging Compatible with iPhone, Samsung Galaxy, Huawei, Google Pixel, etc.: Amazon.de: Electronics & Photo
Yoolax RF Battery Motor Programming Instruction Wood Blinds - YouTube