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A good power bank keeps your phone alive through long train journeys, festivals and days of sightseeing – and the right one can even charge a laptop.
We compared power banks sold in the UK on capacity, charging speed, size and airline rules.
Quick comparison
| Product | Best for | Typical UK price |
|---|---|---|
| Anker Nano Power Bank 10,000mAh | Best everyday | £25–£40 |
| Anker 737 Power Bank (24,000mAh) | Best for laptops | £80–£110 |
| UGREEN Nexode Power Bank 20,000mAh | Best value | £40–£60 |
| Anker MagGo Power Bank 10K | Best for iPhone | £50–£70 |
The 4 best picks
1. Anker Nano Power Bank 10,000mAh – Best everyday
Slim with a built-in USB-C cable – no cable to forget. Built-in USB-C cable.
Why we like it:
- Built-in cable
- Compact
- Fast
Watch out for:
- Can’t charge laptops quickly
Key specs: Capacity: 10,000 mAh; Output: 30 W.
Buy it if you want a slim daily power bank. Skip it if you charge laptops. Typical UK price: £25–£40.
👉 Check the price of the Anker Nano Power Bank 10,000mAh on Amazon.co.uk
2. Anker 737 Power Bank (24,000mAh) – Best for laptops
140 W output charges laptops and has a handy display. 140 W output with display.
Why we like it:
- Charges laptops
- Display
- Large capacity
Watch out for:
- Heavy
Key specs: Capacity: 24,000 mAh; Output: 140 W.
Buy it if you need to charge a laptop. Skip it if you want something small. Typical UK price: £80–£110.
👉 Check the price of the Anker 737 Power Bank (24,000mAh) on Amazon.co.uk
3. UGREEN Nexode Power Bank 20,000mAh – Best value
Fast laptop-capable charging for less. 130 W at a lower price.
Why we like it:
- Good value
- Fast
- Two USB-C
Watch out for:
- Bulky
Key specs: Capacity: 20,000 mAh; Output: 130 W.
Buy it if you want value for laptops. Skip it if you want small size. Typical UK price: £40–£60.
👉 Check the price of the UGREEN Nexode Power Bank 20,000mAh on Amazon.co.uk
4. Anker MagGo Power Bank 10K – Best for iPhone
Snaps magnetically onto MagSafe and Qi2 phones. Magnetic Qi2 charging.
Why we like it:
- Magnetic
- Display
- Qi2 speed
Watch out for:
- Heavier than slim packs
Key specs: Capacity: 10,000 mAh.
Buy it if you want cable-free charging. Skip it if you need laptop power. Typical UK price: £50–£70.
👉 Check the price of the Anker MagGo Power Bank 10K on Amazon.co.uk
How to choose the right one
How much capacity do you need?
10,000 mAh charges most phones about twice; 20,000 mAh suits weekends away or laptops. Higher capacity means more weight.
Charging speed
USB-C Power Delivery (PD) fast-charges modern phones and laptops. Check the output wattage matches your laptop.
Cables and chargers
Carry a short USB-C to USB-C cable and, for older iPhones, a USB-C to Lightning cable. A power bank with pass-through charging can charge itself and your phone from one wall plug overnight in a hotel.
Safety and care
Buy from reputable brands and avoid unbranded power banks, which may lack proper protection circuits. Do not leave power banks in hot cars, and stop using any that swell or get very hot.
Festival and camping tips
A 20,000 mAh power bank covers a long weekend for most phones. Turn on low-power mode and keep your phone warm at night – cold drains batteries faster.
Choosing the right ports
At least one USB-C port with Power Delivery is essential in 2026. A second port lets you charge two devices together, which is useful when travelling with a partner or with earbuds and a phone.
How many charges will I really get?
Power banks lose some energy converting voltages, so real-world capacity is usually around 60–70% of the rated figure. A 10,000 mAh bank typically gives about two full phone charges.
Buying tips for UK shoppers
UK airlines allow power banks in hand luggage only, usually up to 100 Wh (around 27,000 mAh) without airline approval – never in checked bags.
How we chose these products
We compared manufacturer specifications, UK warranty terms, running costs and typical UK prices, and only included products that are widely available from UK retailers. Our picks are based on this research, not on lab tests we have not carried out. Read our editorial guidelines to see how we work.
Frequently asked questions
Can I take a power bank on a plane?
Yes, in hand luggage, typically up to 100 Wh without approval.
Can a power bank charge a laptop?
Yes, if it supports USB-C PD at enough wattage – 65 W or more for most laptops.
How long does a power bank last?
Typically several hundred charge cycles.
Our verdict
The Anker Nano 10K is the best everyday pick; choose the Anker 737 for laptops or UGREEN for value.