GearLab Measured Independent, instrument-measured tests of power banks and USB-C hubs. Buying guides Best Power Banks for Laptops (2026), Measured Reviews Anker Prime 20,000mAh (250W) — 4.5/5UGreen 145W Power Bank 20,000mAh — 4/5UGreen Revodok Pro 10-in-1 USB-C Hub — 4/5