Best Portable Power Bank 2026: Top Picks for Every Budget
Quick Summary
- Best Overall: Anker 737 Power Bank (PowerCore 26K) — exceptional 87W output, massive capacity, and rock-solid build quality
- Best Budget: Xiaomi 33W Power Bank 10000 — affordable, compact, and surprisingly fast for the price
- Best Premium: Mophie Powerstation Pro AC — laptop-grade power with an AC outlet in a sleek, travel-ready shell
Whether you’re commuting across London, trekking through the Scottish Highlands, or simply fed up with hunting for a plug socket at the airport, a reliable portable power bank has become an everyday essential in 2026. With faster charging standards, higher capacities, and slimmer designs than ever before, the market has never been better — but it’s also never been more confusing. In this guide, our team has tested and reviewed the very best portable power banks available to UK buyers right now, covering a range of budgets so you can find the perfect match for your lifestyle and devices.
What to Look For in a Portable Power Bank
- Capacity (mAh): The higher the milliamp-hour rating, the more charges you’ll get. A 10,000mAh bank will charge a typical smartphone roughly twice; 20,000mAh suits travellers needing multi-day power without a socket.
- Charging speed (wattage): Look for Power Delivery (PD) or Quick Charge support. A 30W+ output charges modern smartphones in under an hour, while 65W+ can top up many laptops meaningfully.
- Number and type of ports: USB-C ports with PD are now standard, but check for USB-A legacy ports if you charge older devices. Some premium models even include a wireless charging pad or an AC outlet.
- Size and weight: A 26,800mAh bank is brilliant for a long-haul flight but miserable in a jacket pocket. Match the form factor to your most common use case — pocketable slim banks for daily carry, larger bricks for travel.
Comparison at a Glance
| Product | Price | Best For | Rating |
|---|---|---|---|
| Anker 737 Power Bank (PowerCore 26K) | £89 | All-round daily & travel use | ★★★★★ |
| Xiaomi 33W Power Bank 10000 | £22 | Budget-conscious daily carry | ★★★★☆ |
| Mophie Powerstation Pro AC | £159 | Laptop & multi-device power users | ★★★★☆ |
Our Top Picks
Anker 737 Power Bank (PowerCore 26K)
The Anker 737 has earned its place at the top of our 2026 list by delivering a staggering 87W total output — enough to fast-charge a MacBook Air alongside your iPhone simultaneously. Its 26,800mAh capacity translates to roughly five full phone charges, and Anker’s signature battery management system ensures you get the rated capacity time after time. The digital display showing exact battery percentage is a small but genuinely useful touch that cheaper rivals still skip.
Pros
- 87W total output — charges laptops and phones together
- Accurate digital battery percentage display
- 26,800mAh gives up to five phone charges
- USB-C and USB-A ports included
Cons
- Weighs 670g — not a true pocket device
- Pricier than many rivals at this capacity
Xiaomi 33W Power Bank 10000
Don’t let the low price fool you — the Xiaomi 33W Power Bank 10000 punches well above its weight. For under £25, you get a genuinely compact 10,000mAh unit with a 33W USB-C PD output that can charge a modern smartphone from zero to 50% in about 30 minutes. It’s slim enough to slide into a jeans pocket and light enough at 228g that you’ll forget it’s there. For anyone who needs a reliable top-up for a single device during the working day, this is the obvious choice in 2026.
Pros
- Outstanding value under £25
- Genuinely pocketable at 228g
- 33W PD output is fast for the price bracket
- Neat, minimal design holds up well
Cons
- Only one USB-C port and one USB-A port
- LED indicator, not a precise percentage display
Mophie Powerstation Pro AC
The Mophie Powerstation Pro AC is in a category of its own thanks to one killer feature: a built-in AC outlet that lets you plug in almost any device with a standard UK three-pin adapter. With 27,000mAh capacity and a 100W USB-C PD port alongside the AC socket, this is a genuine laptop replacement solution for business travellers. The premium aluminium chassis feels seriously robust, and Mophie’s reputation for reliability is well earned. Yes, it costs more and weighs nearly 800g, but for frequent flyers and remote workers it’s an investment that pays for itself quickly.
Pros
- Built-in AC outlet powers virtually any device
- 100W USB-C PD for rapid laptop charging
- Premium aluminium build feels luxurious
- 27,000mAh capacity for multi-day trips
Cons
- Expensive at around £159
- Heavy at ~800g — not for light packers
Who Should Buy This?
If you’re a student, commuter, or casual smartphone user who simply wants to avoid a flat battery on a night out or a long train journey, the Xiaomi 33W Power Bank 10000 is all you need. It’s affordable, pocketable, and fast enough for modern phones. Most people fall into this category, and there’s genuinely no need to spend more unless your requirements are more demanding.
For frequent travellers, remote workers, and those who carry multiple devices — a phone, tablet, wireless earbuds, and a laptop — investing in the Anker 737 or the Mophie Powerstation Pro AC makes complete sense. The higher upfront cost is quickly justified by the convenience of knowing every device will stay charged across a long-haul flight or a full day of meetings without access to a wall socket.
Final Verdict
The best portable power bank 2026 has to offer really does depend on your needs and budget. For most UK buyers, the Anker 737 PowerCore 26K at around £89 hits the sweet spot perfectly — enough capacity for multi-day use, fast enough to charge a laptop, and reliable enough to trust completely. Budget shoppers can’t go wrong with the Xiaomi 33W 10000, while serious travellers who need AC power on the go should invest in the Mophie Powerstation Pro AC. Whichever you choose, all three are excellent picks for 2026.
Frequently Asked Questions
What is the best portable power bank for travel in 2026?
The Anker 737 PowerCore 26K is our top recommendation for travel thanks to its 26,800mAh capacity, 87W output, and reliable build quality. However, do note that most airlines restrict power banks to 100Wh (roughly 27,000mAh), so always check your airline’s policy before flying. All three picks in this guide fall within the standard airline limit.
How many mAh do I need in a power bank?
For charging a single smartphone once or twice per day, 10,000mAh is perfectly adequate. If you carry multiple devices or travel for several days without reliable access to a mains socket, opt for 20,000mAh or more. Bear in mind that real-world capacity is typically 10–15% lower than the rated figure due to heat loss during energy conversion.
Can a portable power bank charge a laptop?
Yes, provided the power bank supports USB-C Power Delivery (PD) at 45W or above and your laptop charges via USB-C. The Anker 737 (87W) and Mophie Powerstation Pro AC (100W USB-C PD plus an AC outlet) are both capable of meaningfully charging most modern laptops. Always check your laptop’s wattage requirements before purchasing.
Are power banks allowed on planes in the UK?
Power banks must be carried in your hand luggage — they are not permitted in checked baggage on flights departing UK airports. The standard limit is 100Wh per battery (approximately 27,000mAh at 3.7V), and most airlines allow up to two per passenger. Always declare them if asked by security staff, as lithium batteries are subject to aviation safety regulations.
How long does it take to recharge a power bank itself?
Recharge time depends heavily on the bank’s capacity and its input wattage. A 10,000mAh bank with a 33W input (like the Xiaomi) recharges in roughly 1.5–2 hours, whereas a 26,800mAh bank with a 65W input takes around three hours. Always use the fastest compatible charger you own to minimise downtime between uses.