The best power banks
Pocket-sized top-ups, cables built in, and one that can even charge a laptop: the power banks worth carrying.
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
#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.
More detailsHide details
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
Runner-up
#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.
More detailsHide details
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
Best for laptops
#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.
More detailsHide details
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
Best with built-in cables
#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.
More detailsHide details
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
Best budget
#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.
More detailsHide details
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 %
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 Rating | 9.2 | 9.0 | 9.0 | 9.0 | 8.8 |
| Price | £23.99 RRP | £21.99 RRP | £89.98 RRP | £24.50 RRP | £21.09 RRP |
| Capacity | 10,000mAh (about 2 phone charges) | 10,000mAh | 25,000mAh | 10,000mAh | 15,000mAh |
| Fastest output | 30W | 45W | 165W total (100W per port) | 22.5W | 22.5W |
| Built-in cable | USB-C | No | Two USB-C (one retractable) | USB-C, Lightning, Micro-USB, USB-A | USB-C and Lightning |
| Good to know | Cable doubles as a carry loop | 40% smaller than a standard 10,000mAh | Charges 4 devices at once | Just 1.9cm thin | Screen shows battery % |
| Best for | Everyday top-ups with nothing to forget | Fast charging in the smallest package | Laptops, tablets and long trips | Families with a mix of old and new devices | The most capacity for the money |
| Check price | View on Amazon | View on Amazon | View on Amazon | View on Amazon | View on Amazon |
Swipe sideways to see all 5.
Photos are illustrative. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. How we pick · How this works.