Best Portable Battery Charger UK 2026: A Researched Comparison
At a Glance
- Most Affordable: Anker MagGo Power Bank (10K, Slim) A1664 — £69.99
- Highest Rated: UGREEN Nexode Power Bank 25000mAh 145W — 220 reviews on uk.ugreen.com, making it the most reviewed option we found
- Also Worth Considering: UGREEN Nexode Power Bank 20000mAh 145W Qi2 — adds Qi2 wireless charging and a TFT display alongside 145W laptop-level output
Finding the right portable battery charger in the UK can feel overwhelming given the sheer number of options on the market. To make things easier, we researched what is currently available and pulled together real, up-to-date listings — complete with prices and key specifications — so you can compare your options side by side without having to trawl through dozens of product pages. Whether you need something slim and wireless for your iPhone, or a high-capacity bank that can top up a laptop, the three options below cover a solid range of budgets and use cases. All prices are based on current listings as of 2026.
What to Look For
- Capacity (mAh): The milliampere-hour rating tells you how much charge a power bank can store. A 10,000mAh bank will typically charge a modern smartphone two to three times, while 20,000–25,000mAh banks can handle laptops and multiple devices on a single charge.
- Output wattage: Higher wattage means faster charging. Look for at least 18W–20W for fast smartphone charging, and 60W or more if you want to charge a laptop. Some premium power banks offer 100W+ for the fastest possible top-ups.
- Number and type of ports: Consider how many devices you need to charge at once. A mix of USB-C and USB-A ports offers the most flexibility, while a dedicated wireless charging pad (Qi2 or MagSafe) removes the need for cables altogether.
- Size and weight: Higher capacity inevitably means more weight. If you carry a power bank every day, a slim, lightweight design matters — but if it only travels in a bag for longer trips, a heavier high-capacity option may be worth it.
Comparison at a Glance
| Product | Approx. Price | Good For | Rating |
|---|---|---|---|
| Anker MagGo Power Bank (10K, Slim) A1664 | £69.99 | iPhone users wanting slim wireless charging on the go | Not specified |
| UGREEN Nexode Power Bank 20000mAh 145W Qi2 | £129.99 | Charging laptops and multiple devices simultaneously | 29 reviews (uk.ugreen.com) |
| UGREEN Nexode Power Bank 25000mAh 145W | £79.99 | High-capacity laptop-level power at a lower price point | 220 reviews (uk.ugreen.com) |
What We Found
Anker MagGo Power Bank (10K, Slim) A1664
Key Features
- Ultra-slim 14.7mm design with 10,000mAh capacity and Qi2-certified 15W wireless charging
- 30W USB-C port for fast wired charging alongside the wireless pad
UGREEN Nexode Power Bank 20000mAh 145W Qi2
Key Features
- 20,000mAh capacity with 145W total output across two USB-C ports, one USB-A port, and a Qi2 wireless charging pad
- TFT display shows remaining battery level, and it is capable of charging laptops and multiple devices at the same time
UGREEN Nexode Power Bank 25000mAh 145W
Key Features
- 25,000mAh capacity with 145W output across three ports (2x USB-C, 1x USB-A) and an LED battery indicator
- Weighs 513g — positioned as a high-value option for those who need laptop-level portable power without a premium price tag
Who Should Buy Which?
If you are an iPhone user who prioritises a slim, everyday carry and wireless convenience over raw capacity, the Anker MagGo Power Bank (10K, Slim) A1664 at £69.99 is the standout choice from our research. Its Qi2-certified 15W wireless charging and ultra-thin 14.7mm profile make it well suited to topping up a single smartphone quickly and discreetly. The 30W USB-C port also gives you a wired fast-charging option when needed.
For anyone who needs to keep a laptop, tablet, and smartphone charged while travelling or working remotely, both UGREEN Nexode options are worth a look. The 25,000mAh 145W model at £79.99 offers the largest capacity and the most buyer feedback of the three, making it a strong value pick. If wireless charging matters to you alongside that laptop-level output, the 20,000mAh 145W Qi2 model at £129.99 adds Qi2 and a TFT display, though at a notably higher price.
Which One Should You Choose?
Based on what we found, the right choice depends on your priorities. For slim wireless charging on a budget, the Anker MagGo at £69.99 is hard to beat. For maximum capacity and strong user feedback at a reasonable price, the UGREEN 25,000mAh at £79.99 stands out. If you want the full package — wireless charging, laptop power, and a battery display — the UGREEN 20,000mAh Qi2 at £129.99 justifies its higher cost. Consider your daily carry habits and the devices you need to charge before deciding.
Frequently Asked Questions
Are portable battery chargers allowed on UK flights?
Yes, but with restrictions. Most airlines follow the same rules: power banks must be carried in hand luggage only — never in checked baggage — and are generally limited to a maximum capacity of 100Wh (roughly 27,000mAh at 3.7V). Always check with your specific airline before travelling, as rules can vary.
How many times can a power bank charge my phone?
It depends on both the power bank’s capacity and your phone’s battery size. As a rough guide, a 10,000mAh power bank will charge a typical modern smartphone (around 4,000–5,000mAh battery) approximately one and a half to two times, accounting for energy lost during the transfer process. A 20,000–25,000mAh bank could charge the same phone four to five times.
What is the difference between Qi2 and standard Qi wireless charging?
Qi2 is the updated wireless charging standard that delivers up to 15W of power — the same speed as Apple’s MagSafe — compared to a typical 5–10W on older Qi chargers. Qi2 also uses a magnetic alignment system to ensure the device is properly positioned on the charger, which improves efficiency and reduces wasted energy.
Can a portable power bank charge a laptop?
Yes, provided the power bank has a USB-C port that supports Power Delivery (PD) at a high enough wattage. Most laptops require at least 45W–65W to charge efficiently; some larger models need 90W or more. Always check your laptop’s charging requirements against the power bank’s maximum output before purchasing.
How long does it take to recharge a power bank itself?
Recharge time varies greatly depending on the power bank’s capacity and the input wattage it supports. A 10,000mAh bank charged via a 20W USB-C adapter might refill in two to three hours, while a 25,000mAh bank could take six hours or more on a lower-wattage charger. Using a high-wattage USB-C charger and a cable that supports the power bank’s maximum input will significantly reduce waiting time.