Shortlist and buying guide · the ranked board is on its way
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What to look for
Capacity in mAh is not what reaches the phone; check the output in watts for fast charging.
Models worth comparing
From manufacturers' specifications and published UK reviews, read on 6 October 2026. Not tested by us. In no particular order: these are not ranked, and we do not say which is best until the customer ratings are in.
Budget
Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable)
Phone owners who want a small everyday battery that carries its own cable, so there is nothing extra to pack.
Built-in 70cm retractable USB-C cable that Anker rates for 20,000 bends
Up to 45W from the cable, with 40W for iPhone 17 models
Spare USB-C and USB-A ports plus a small status display
Watch out for: The bank itself only refills at up to 30W, and there is no wireless charging.
We are gathering the customer ratings this board needs from UK shops. When they are in, the ranked list replaces this guide at the same address, scored the way every board is: star ratings weighed by how many people left them. How we score.