I don't know why these devices got bad reviews, but I can assume they thought their battery wasn't charging because of the AC adapter when it most likely was the case themselves Battery or defective circuitry on the motherboard. These devices cost almost a third of the price of official Lenovo devices and perfectly power the device. The cable is even longer when you consider the length of the AC part of the charger.
6" E-book Amazon Kindle PaperWhite 2018 1440x1080, E-Ink, 8 GB, Standard Equipment, sage
77 Review
14" Laptop HUAWEI MateBook D 14"NBL-WAQ9R 1920x1080, AMD Ryzen 5 3500U 2.1GHz, RAM 8GB, DDR4, SSD 512GB, AMD Radeon Vega 8, Windows 10 Home, 53010TTB, Space Gray
75 Review
Wi-Fi router ASUS RT-AC88U, black/red
41 Review
Fast Charging Made Easy with Quick Charger COMMO 20W Compact Charger USB-C
14 Review