The best power banks

Pocket-sized top-ups, cables built in, and one that can even charge a laptop: the power banks worth carrying.

Top 5 · Updated 27 September 2026

A phone charging from a cable on a table

A power bank is one of the most useful small gifts there is, especially for teenagers, commuters and anyone who travels. 10,000mAh is enough to charge most phones about twice and still fit in a pocket.

What matters

  • 10,000mAh suits most people; 20,000mAh and up is for long trips or laptops.
  • Look for USB-C and at least 20W for fast charging.
  • Built-in cables mean nothing to forget.
  • You can take power banks in hand luggage on planes, but not in the hold.

Best overall

A phone charging from a cable on a table
Illustrative photo

#1 of 5

9.2/10

Anker 10,000mAh 30W Power Bank with Built-in USB-C Cable

£23.99 RRP

Anker started out in 2011 making replacement laptop batteries, and power banks are still what it does best. The built-in cable doubles as a strap, so there’s nothing to forget.

  • 10,000mAh (about 2 phone charges)
  • 30W fast charging
  • Built-in USB-C cable
  • Cable doubles as a carry loop

What owners say: Charges quickly, easy to keep in a bag, and brilliant for trips. Owners love the built-in cable.

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A closer look: There’s no wall plug in the box, but a USB-C charger you already own will refill it, and it takes up to 20W, so one with at least that much tops it up fastest. The built-in lead is only 13.7cm long, which keeps things tidy in a bag or on a train table but means holding phone and battery together while they charge.

Best for: Everyday top-ups with nothing to forget

Capacity
10,000mAh (about 2 phone charges)
Fastest output
30W
Built-in cable
USB-C
Good to know
Cable doubles as a carry loop
View on Amazon

Runner-up

A power bank with charging cables
Illustrative photo

#2 of 5

9.0/10

INIU 45W 10,000mAh Power Bank

£21.99 RRP

Around 40% smaller than a typical 10,000mAh power bank, so it genuinely fits a jeans pocket, and 45W fast charging means less time tethered to a socket.

  • 10,000mAh
  • 45W fast charging
  • 40% smaller than standard
  • Pocket-sized

What owners say: Reliable, compact and quick to charge. Easy to carry in a pocket, and good value.

Heads up: A small number of owners report it stopping after a few months, so keep the receipt.

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A closer look: Unlike power banks with a fixed lead, this one comes with a 12cm braided USB-C cable that unplugs, so a frayed or lost one is easily swapped for any spare. There’s enough power to top up an iPad, a Nintendo Switch or a Steam Deck as well as a phone, which makes it a thoughtful present for a gamer who travels.

Best for: Fast charging in the smallest package

Capacity
10,000mAh
Fastest output
45W
Built-in cable
No
Good to know
40% smaller than a standard 10,000mAh
View on Amazon

Best for laptops

Phones and gadgets on a table
Illustrative photo

#3 of 5

9.0/10

Anker 25,000mAh 165W Power Bank

£89.98 RRP

Three 100W USB-C ports mean it can charge a laptop, a tablet and a phone at once. One for long-haul flights and festival weekends.

  • 25,000mAh
  • Three 100W USB-C ports
  • 165W total output
  • Charges laptops and tablets

What owners say: Powerful enough to charge a MacBook and iPad, and portable for travel.

Heads up: It’s big and heavy compared with a pocket power bank.

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A closer look: One of its two built-in leads pulls out to about 70cm and winds back in, so a phone can charge in your hand while the pack stays in the bag. Add the extra USB-A and USB-C sockets and it runs four gadgets at once, and a 100W wall charger will get it to 30% in about 20 minutes.

Best for: Laptops, tablets and long trips

Capacity
25,000mAh
Fastest output
165W total (100W per port)
Built-in cable
Two USB-C (one retractable)
Good to know
Charges 4 devices at once
View on Amazon

Best with built-in cables

A smartphone plugged in to charge
Illustrative photo

#4 of 5

9.0/10

HELLEE 10,000mAh Power Bank with 4 Built-in Cables

£24.50 RRP

Four cables built in, including old Micro-USB, so it charges the Kindle, the earbuds and your nan’s phone without a cable hunt.

  • 4 built-in cables (USB-C, Lightning, Micro-USB, USB-A)
  • 22.5W fast charging
  • 10,000mAh

What owners say: A brilliant little charger for travelling: compact, big capacity, and no cables to forget.

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A closer look: Just 1.9cm thick and 11.5cm long, it slips into a clutch bag or the front pocket of a school bag, and the silicone lanyard clips to a backpack strap or loops over your fingers. A full battery holds around two phone charges, enough to cover a long day of maps and photos on a city break.

Best for: Families with a mix of old and new devices

Capacity
10,000mAh
Fastest output
22.5W
Built-in cable
USB-C, Lightning, Micro-USB, USB-A
Good to know
Just 1.9cm thin
View on Amazon

Best budget

A phone charging from a cable on a table
Illustrative photo

#5 of 5

8.8/10

CFIAI 15,000mAh Power Bank with Built-in Cables

£21.09 RRP

More capacity than most at the price, with the cables built in. A stocking filler that actually gets used.

  • 15,000mAh
  • 22.5W fast charging
  • Built-in cables

What owners say: Good value, handy for travel, and it charges two or three phones on a full battery.

Heads up: Charging speed reviews are mixed; it’s not the fastest here.

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A closer look: A quick press of the power button shows the exact charge as a percentage, so there’s no guessing whether it needs plugging in before a trip. With built-in USB-C and iPhone leads plus two extra sockets, it can charge four devices at once, which suits a household with a mix of phones. A wall plug isn’t included, so use one you already own.

Best for: The most capacity for the money

Capacity
15,000mAh
Fastest output
22.5W
Built-in cable
USB-C and Lightning
Good to know
Screen shows battery %
View on Amazon

How they compare

Feature#1Anker Zolo 10KBest overall#2INIU 45W 10KRunner-up#3Anker 25K 165WBest for laptops#4HELLEE 10KBest with built-in cables#5CFIAI 15KBest budget
Picked Rating9.29.09.09.08.8
Price£23.99 RRP£21.99 RRP£89.98 RRP£24.50 RRP£21.09 RRP
Capacity10,000mAh (about 2 phone charges)10,000mAh25,000mAh10,000mAh15,000mAh
Fastest output30W45W165W total (100W per port)22.5W22.5W
Built-in cable USB-CNo Two USB-C (one retractable) USB-C, Lightning, Micro-USB, USB-A USB-C and Lightning
Good to knowCable doubles as a carry loop40% smaller than a standard 10,000mAhCharges 4 devices at onceJust 1.9cm thinScreen shows battery %
Best forEveryday top-ups with nothing to forgetFast charging in the smallest packageLaptops, tablets and long tripsFamilies with a mix of old and new devicesThe most capacity for the money
Check priceView on AmazonView on AmazonView on AmazonView on AmazonView on Amazon

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