The Best Power Banks (UK): Four Anker Picks for Phones, iPhones and Laptops
Need a power bank that actually keeps up? Four Anker picks for everyday phones, MagSafe iPhones and laptops, from £29.99, explained in plain English.
Anker Nano Power Bank (10K, 45W, Built-In Retractable Cable)
Pocket-sized, fast, and the cable is built in.
- About two phone charges
- 45W fast charging
- Built-in retractable USB-C cable
Anker MagGo Power Bank (10K, Qi2 15W)
Snaps onto your iPhone and charges with no cable.
- No cable needed
- Qi2 15W fast wireless charging
- Built-in stand
Anker Laptop Power Bank (25K, 165W, Built-In Cables)
Big enough for a laptop, a tablet and a phone at once.
- Charges laptops at up to 100W
- 25,000mAh for several days away
- Two built-in USB-C cables
Anker 621 Magnetic Power Bank (MagGo, 5K)
A cheap, slim magnetic top-up for iPhone.
- Under £30
- Slim and pocket-sized
- Strong magnets
There's nothing worse than a phone on 5% when you're out for the day, on a train or waiting for a flight. A good power bank fixes that, but the choice is huge, and the numbers on the box (mAh, W, PD, Qi2) don't make it any easier.
Anker is one of the best-known names in charging. We've picked four of its power banks for four different needs, and explained in plain English what the numbers actually mean for you.
Ways to save at Anker UK
- Free standard UK delivery, usually within 3 to 7 working days
- Anker often runs on-site codes and bundle deals, so check the product page before you buy
- See today's offers at Anker UK
The four power banks side by side
| Nano Power Bank (10K, 45W) | MagGo Power Bank (10K, Qi2) | Laptop Power Bank (25K, 165W) | 621 Magnetic (5K) | |
|---|---|---|---|---|
| Best for | Everyday carry | MagSafe iPhones | Laptops and travel | Tight budgets |
| Capacity | 10,000mAh | 10,000mAh | 25,000mAh | 5,000mAh |
| Fastest output | 45W USB-C | 15W wireless | 100W per USB-C port | Wireless (magnetic) |
| Built-in cable | Yes, retractable USB-C | No (cable included) | Yes, two USB-C | No |
| Price | £49.99 | £89.99 | £89.98 | £29.99 |
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What to look for in a power bank
A few simple numbers tell you almost everything you need to know.
- Capacity (mAh). This is how much power it stores. 5,000mAh is roughly one top-up for most phones, 10,000mAh is about two, and 20,000mAh or more is for long trips or laptops. Real-world charges are a bit lower than the maths suggests, because some energy is lost as heat.
- Speed (W). The higher the wattage, the faster it charges. 20W to 45W is plenty for phones. Laptops usually need 60W or more.
- Wireless or cable. Magnetic (MagSafe or Qi2) power banks snap onto the back of newer iPhones, so there's no cable to carry. Cable charging is usually faster and works with almost any phone.
- Built-in cables. A cable built into the power bank means you'll never leave home without one.
- Size and weight. A 10,000mAh power bank fits in a pocket. A 25,000mAh one belongs in a bag.
- Flying. Power banks must go in your hand luggage, not your checked bag. Most airlines allow power banks up to 100Wh without asking, which covers all four of our picks, but always check your airline's rules.
What do customers say about Anker?
Anker scores 3.8 out of 5 from more than 6,600 reviews on Trustpilot. Buyers mostly praise reliable, well-built chargers and power banks, with one saying "The product quality has always been exemplary." The main complaints are delayed deliveries, slow customer service and some warranty disputes.
Our tip: keep your order email and register your product, so a warranty claim is quicker if you ever need one.
So, which power bank should you buy?
Go for the Nano Power Bank if you want one power bank for everyday use, with a cable you can't forget.
Go for the MagGo Power Bank if you have an iPhone 12 or newer and want to charge without cables.
Go for the Laptop Power Bank if you travel with a laptop, tablet and phone and want to charge them all.
Go for the 621 Magnetic if you just want a cheap, pocket-sized top-up for your iPhone.
Not quite right? See all power banks at Anker UK
Common questions
What size power bank do I need?
For a day out with one phone, 5,000 to 10,000mAh is enough. For a weekend away or two devices, go for 20,000mAh. For a laptop, look for 20,000mAh or more and at least 60W output.
Can I take a power bank on a plane?
Yes, in your hand luggage. Power banks aren't allowed in checked bags. Most airlines allow power banks up to 100Wh without approval, but rules vary, so check with your airline before you fly.
Will a MagSafe power bank work with my phone?
Magnetic power banks are designed for iPhone 12 and newer. Other phones can usually use the wireless charging with a magnetic ring or case, but cable charging is often the simpler choice.
Is it bad to leave my phone charging from a power bank?
No. Modern phones stop charging when the battery is full, and the Anker Nano Power Bank includes 24/7 battery protection.
How long does a power bank take to recharge?
It depends on the size and the charger you use. Anker says the Nano Power Bank recharges fully in about 2 hours with a 30W charger, and the Laptop Power Bank reaches 30% in about 20 minutes with a 100W charger.
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- We researched popular options sold by major UK retailers.
- We compared features, specifications and verified buyer reviews.
- We checked prices across several stores so you can see where it is cheapest.
Anker Nano Power Bank (10K, 45W, Built-In Retractable Cable)
This is the power bank most people should buy. It holds 10,000mAh, which is about two phone top-ups, and charges at up to 45W, fast enough to take an iPhone 16 Pro to 50% in around 27 minutes.
The best bit is the retractable USB-C cable built into the body, so you'll never be stuck without a lead. A small screen shows exactly how much charge is left, and at 232g it's small enough for a jacket pocket.
✓What We Like
- About two phone charges
- 45W fast charging
- Built-in retractable USB-C cable
- Smart display shows battery left
- Flight-approved size
✕What to Keep in Mind
- One USB-C output on the cable
- Not wireless
Anker MagGo Power Bank (10K, Qi2 15W)
If you have a newer iPhone, this snaps magnetically onto the back and charges wirelessly. It's Qi2 certified, so it charges at up to 15W, about twice as fast as older magnetic power banks. Anker says it takes an iPhone 15 from 0 to 50% in about 44 minutes.
Its 10,000mAh battery gives roughly 1.8 charges for an iPhone 15 Pro. There's a smart display and a fold-out stand, so you can watch videos while it charges.
✓What We Like
- No cable needed
- Qi2 15W fast wireless charging
- Built-in stand
- Smart display
- About 1.8 iPhone charges
✕What to Keep in Mind
- Best for iPhone 12 and newer
- Wireless is slower than cable charging
Anker Laptop Power Bank (25K, 165W, Built-In Cables)
This is the one for long trips and working on the go. The 25,000mAh battery has three USB-C outputs at up to 100W each, enough to charge a MacBook while you top up your phone.
Two USB-C cables are built in: one retracts, and the other doubles as a carry strap. With the extra USB-A and USB-C ports, you can charge four devices at once. With a 100W charger, it refills to 30% in about 20 minutes.
✓What We Like
- Charges laptops at up to 100W
- 25,000mAh for several days away
- Two built-in USB-C cables
- Charges 4 devices at once
✕What to Keep in Mind
- Heavier, so best kept in a bag
- More power than most people need for a phone
Anker 621 Magnetic Power Bank (MagGo, 5K)
If you just want a little extra battery for the evening, this slim magnetic power bank is the cheapest way to get it. It snaps onto the back of MagSafe iPhones (iPhone 12 and later), so you can keep using your phone while it charges.
At 5,000mAh it's about one top-up rather than a full charge, but it's small enough to forget it's there.
✓What We Like
- Under £30
- Slim and pocket-sized
- Strong magnets
- No cable needed
✕What to Keep in Mind
- About one top-up only
- Slower than our other picks
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