For travellers, the Anker 20,000 mAh is the pick — 45W from phone to laptop, days of charge; drop to the INIU 45W for lighter days, 22.5W for phone top-ups.

A phone that dies at 3pm on a long day out is the whole reason a power bank lives in your bag. But the right one depends on how you travel — a quick phone top-up on the commute asks for something very different from keeping a laptop alive across a multi-day trip.

We weighed each charger on capacity, charging speed, the range of devices it can handle, and how easily it travels. The Anker 20,000 mAh is our do-everything pick because its 45W output reaches from phones to laptops and its capacity carries several devices across days, with dual built-in USB-C cables so there is nothing extra to pack.

The alternatives are about carrying less. The INIU 45W keeps the same fast-charging wattage in a unit that is 40% smaller, and the 22.5W INIU is a compact everyday carry for people who mainly charge a phone.

Every assessment here is a synthesis of documented specifications and general use, not a hands-on lab test — you can read exactly what that means on our how-we-test page. Choose by how far you travel and what you need to charge, not by the biggest number.