Xiaomi's 20,000mAh 22.5W power bank, priced at 129 yuan ($18), features a built-in USB-C cable, dual ports, 3-device charging, and smart current recognition.
My pick for the best power bank overall goes to the Anker Nano 10,000 mAh for its portability, quality construction, and the fact that it has USB-C and USB-A ports, which means it caters to both ...