A good power bank is one of those purchases you don't think about until the moment you desperately need one. We've grouped the best options on Amazon UK into three tiers — budget everyday chargers, mid-range chargers that can top up a tablet as well as a phone, and premium power stations capable of charging a laptop — so you can pick based on what you actually carry, not just what's cheapest.
These won't charge a laptop, but they'll comfortably get a phone from empty to full at least once, and they're small enough to live in a bag permanently.
A genuinely tiny power bank that still holds a full phone charge. INIU has built a loyal following on Amazon UK almost entirely on word of mouth for chargers exactly like this one.
What reviewers say: Praised for punching well above its size and price, with reliable fast-charging support for most phones.
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Anker's long-running budget staple. Nothing flashy, just a slim, reliable 10,000mAh charger with the brand's usual safety and build-quality reputation.
What reviewers say: Consistently recommended as a "just works" first power bank, with Anker's typically strong reliability track record.
Buy HereBigger capacity and faster charging speeds — these can realistically get a laptop from empty to a usable charge in a pinch, even if they're not designed primarily for that.
A well-built 20K power bank with a small digital display showing exactly how much charge is left — a small feature that makes a bigger difference than it sounds.
What reviewers say: Liked for its clear display and Belkin's typically dependable build quality, at a fair price for the capacity.
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A different shape entirely — this snaps magnetically to the back of compatible phones for top-ups on the move, without a cable dangling out of your pocket.
What reviewers say: A favourite for anyone who finds cables annoying — less total capacity than a brick-style bank, but far more convenient day to day.
Buy HereThese cost more, but they can genuinely replace a laptop charger for a day out, on top of keeping every other device topped up.
A serious power bank with a built-in smart display showing charge time estimates, and enough output to fast-charge a laptop as well as a phone.
What reviewers say: Regularly cited as one of the best all-round power banks available, particularly for anyone who also needs to charge a laptop on the go.
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Smaller capacity than the 737 above, but far higher power output — the trade-off is a faster charge for fewer total top-ups.
What reviewers say: Praised for genuinely laptop-grade charging speed in a still-portable size, though it comes at a premium price.
Buy HereFor most people, a mid-range 20,000mAh bank like the Belkin BoostCharge hits the right balance of price and usefulness. If you only ever need to top up a phone, save your money and go budget — an INIU or Anker 313 will do the job. But if you regularly work away from a desk and need your laptop to survive the day too, the Anker 737 or Anker Prime are worth the extra spend.
