Portable Charger Reviews 2026: Best Power Banks Tested & Ranked
Quick Summary
- Best Overall: Anker 737 Power Bank (PowerCore 26K) — massive capacity, 140W output, and rock-solid build quality
- Best Budget: Anker 313 Power Bank (10,000mAh) — reliable, compact, and under £20
- Best Premium: Baseus Blade 100W Laptop Power Bank — ultra-slim, laptop-ready, and beautifully finished
Finding a reliable portable charger in 2026 is harder than it sounds. The market is flooded with cheap units that overstate their capacity and underdeliver when it matters most. Whether you need a pocket-friendly top-up for your daily commute, a high-capacity bank to survive a multi-day festival, or a laptop-compatible powerhouse for business travel, we have tested the leading models across every budget. In this guide to portable charger reviews 2026, we cut through the marketing noise to give you honest, real-world assessments — so you can invest your money wisely and never be caught with a dead battery again.
What to Look For in a Portable Charger
- Capacity (mAh): Higher milliamp-hour ratings mean more charges, but real-world output is typically 60–70% of the stated figure due to heat and conversion losses — so a 20,000mAh bank realistically delivers around 12,000–14,000mAh to your device.
- Output wattage and fast-charging standards: Look for USB Power Delivery (PD) or Qualcomm Quick Charge support. A 20W+ output will charge a modern smartphone from flat to 50% in roughly 30 minutes, whereas a basic 5W charger takes well over two hours.
- Number and type of ports: USB-C ports are now the gold standard. Multiple ports let you charge a phone and wireless earbuds simultaneously. If you need to top up a laptop, ensure the bank delivers at least 45W via USB-C PD.
- Size, weight, and build quality: A 10,000mAh bank should weigh no more than 200g to remain genuinely pocketable. Check for a sturdy shell, a clear capacity indicator (LED dots or a percentage display), and airline compliance — most airlines restrict power banks to 100Wh (roughly 27,000mAh at 3.7V), so check before you fly.
Comparison at a Glance
| Product | Price | Best For | Rating |
|---|---|---|---|
| Anker 737 Power Bank (PowerCore 26K) | £120 | All-round daily & travel use | ★★★★★ |
| Anker 313 Power Bank (10,000mAh) | £18 | Budget commuters & students | ★★★★☆ |
| Baseus Blade 100W Laptop Power Bank | £89 | Business travellers & laptop users | ★★★★☆ |
Our Top Picks
Anker 737 Power Bank (PowerCore 26K)
The Anker 737 is the power bank we would buy with our own money. Its 26,800mAh capacity can charge a modern flagship smartphone around six times or a 13-inch laptop twice over. The headline feature is its bidirectional 140W USB-C port — you can charge the bank itself at 65W while simultaneously outputting 65W to a laptop, which is astonishingly convenient. The smart digital display shows remaining battery percentage, input/output wattage in real time, and estimated time to full charge. Build quality is excellent: the rubberised casing feels premium without being slippery, and it passed our drop tests without complaint.
Pros
- 140W total output charges laptops with ease
- Real-time smart display shows wattage and time remaining
- 26,800mAh gives exceptional capacity for multi-day trips
Cons
- Weighs 680g — not truly pocketable
- Premium price may be overkill for light users
Anker 313 Power Bank (10,000mAh)
Do not let the bargain price fool you — the Anker 313 is a genuinely capable everyday companion. At just 188g it slips into a jacket pocket without a second thought, and its 10,000mAh cell will give most smartphones two full charges. It uses Anker’s MultiProtect safety suite (surge protection, short-circuit protection, and temperature control), which puts it well ahead of no-name alternatives at a similar price. Charging speed is limited to 12W output, so it will not win any drag races, but for keeping your phone topped up through a long day it delivers exactly what it promises.
Pros
- Exceptional value — under £20 from a trusted brand
- Lightweight and genuinely pocket-friendly at 188g
- MultiProtect safety features included as standard
Cons
- No fast-charging support (max 12W output)
- Only two ports (one USB-A, one USB-C)
Baseus Blade 100W Laptop Power Bank (20,000mAh)
The Baseus Blade redefines what a premium power bank can look like. At just 14.3mm thick — roughly the same as two stacked smartphones — it slides effortlessly into a laptop bag or briefcase. Despite its svelte profile it packs a 20,000mAh cell and delivers up to 100W via USB-C PD, enough to charge a MacBook Air at full speed. A secondary USB-C port outputs 45W, and there is a USB-A port for legacy cables. The aluminium shell feels genuinely luxurious, and the slim LED indicator strip is pleasingly minimal. Its one limitation is that it recharges slowly at 65W input, so you will want to plug it in overnight.
Pros
- Ultra-slim 14.3mm design fits in any bag effortlessly
- 100W USB-C PD output handles laptops and tablets
- Premium aluminium build that looks and feels expensive
Cons
- Recharges slowly (max 65W input)
- No digital percentage display — LED strip is less precise
Who Should Buy This?
A portable charger is a worthwhile purchase for almost anyone who leaves the house with a smartphone — which, in 2026, is virtually everybody. Commuters navigating long rail journeys, students attending full days of lectures, festival-goers without access to mains power, and remote workers hopping between cafés will all benefit enormously from having a power bank in their bag. Even at home, a compact charger on your bedside table can be more convenient than scrabbling for a wall socket during a late-night binge-watch session.
That said, your specific needs should guide your choice. If you travel with a laptop and care about aesthetics, spend the extra money on the Baseus Blade. If you simply want the peace of mind of knowing your phone will survive the day without spending more than £20, the Anker 313 is hard to argue with. And if you want one device that handles everything — phones, tablets, laptops, and accessories simultaneously — the Anker 737 is worth every penny of its higher price tag.
Final Verdict
After thorough testing for these portable charger reviews 2026, the Anker 737 PowerCore 26K stands out as the definitive all-rounder — its 140W output, smart display, and vast capacity make it unmatched for versatility. Travellers who prioritise sleekness should look at the Baseus Blade 100W, whilst anyone on a tight budget simply cannot do better than the Anker 313. Whichever model you choose, prioritise reputable brands, verify airline watt-hour limits before you fly, and always buy from an authorised retailer to ensure genuine safety certifications.
Frequently Asked Questions
How many mAh do I need in a portable charger in 2026?
For most smartphone users, 10,000mAh provides two to three full charges and remains compact enough for everyday carry. If you want to charge a laptop or power multiple devices on a long trip, opt for 20,000–26,800mAh. Remember that real-world capacity is around 60–70% of the stated figure due to energy conversion losses.
Can I take a portable charger on a plane in the UK in 2026?
Yes, but power banks must be carried in your hand luggage only — never in checked baggage. Most UK and EU airlines allow power banks up to 100Wh (approximately 27,000mAh at 3.7V) without prior approval. Banks between 100Wh and 160Wh typically require airline permission, so always check with your carrier before you travel.
What is USB Power Delivery (PD) and do I need it?
USB Power Delivery is a fast-charging standard that allows chargers and devices to negotiate higher voltages and currents — enabling speeds of up to 240W on compatible hardware. If you own an iPhone 12 or later, a Samsung Galaxy S21 or later, or any modern laptop with a USB-C port, a power bank with USB-C PD will charge your devices significantly faster than a standard 5W or 10W output.
How long does a portable charger take to recharge itself?
Recharge time depends on both the bank’s capacity and the input wattage it supports. A 10,000mAh bank charged at 18W will refill in roughly three to four hours, while a 26,800mAh bank accepting 65W input takes around five to six hours. Always use the fastest compatible charger (such as a 65W USB-C GaN charger) to minimise downtime.
Are cheap no-brand portable chargers safe to use?
They carry a higher risk than certified alternatives. Reputable brands submit their products for independent safety certification (look for CE, UKCA, and UN38.3 markings), which tests for overcharging, overheating, and short-circuit protection. No-brand chargers frequently overstate capacity and skip these safeguards — we recommend sticking to established manufacturers such as Anker, Baseus, or Belkin, particularly when charging expensive devices.