WIRED recommends high-capacity laptop power banks, based on the author’s testing of more than 100 portable chargers. The guide prioritises models of 20,000 mAh or more, which can generally charge most laptops up to twice, and highlights fast charging, multiple USB-C ports and flight-compliant capacities.

– EcoFlow Rapid Pro X: WIRED’s top pick, with 27,650 mAh capacity, 300W output, three USB-C ports and a retractable USB-C cable. With its dock, it can reach 80% charge in 20 minutes.
– Anker Prime Power Bank: The preferred option with a dock, offering 26,250 mAh and 300W across two USB-C ports and one USB-A port. It can recharge to 80% in 20 minutes using both USB-C inputs.
– Both models can charge several devices simultaneously, including laptops and phones, and include displays showing battery and charging information.