Desworthy Editorial Team
Desworthy editorial reviewer focused on ergonomic chair research, desk tech, affiliate disclosure, and practical UK home office buying decisions.
Last reviewed on by Desworthy Editorial Team.
Last Verified Date: 6 October 2026. UK sources and named configurations checked on this date. Prices and stock can change.
Quick buying advice
- For one USB-C laptop, choose its required single-port voltage and wattage before considering a 200W or 300W total-output headline.
- Shortlist UGREEN’s 25,000mAh integrated-cable model for a 100W USB-C requirement; consider Anker Prime for a documented 140W-compatible laptop and cable.
- Use the printed watt-hour rating for travel. Current CAA rules limit travellers to two power banks, carried in cabin baggage; check your airline’s rules before departure. CAA source.
Three specific UK configurations
| Model | Output distinction | Price checked 6 October |
|---|---|---|
| UGREEN Nexode 25,000mAh 200W, SKU 75702 | Manufacturer: 100W maximum per USB-C output; 200W shared total. | £64.99 with DL75702; base £79.99 |
| Anker Prime 26K 300W, SKU A110AH11 | Manufacturer: up to 140W per USB-C; 300W combined headline. | £129.00 with official code; base £179.99 |
| Anker Prime 27,650mAh 250W, Black SKU A1340012 | Manufacturer: up to 140W single output; 250W combined headline. | £129.99 with official code; base £179.99 |
The Anker codes are dated offers ending on 7 October 2026; the exact UK time appears on each offer page. The UGREEN page provides no fixed end date. None of these figures is a completed checkout or a measured number of laptop recharges. A 300W bank is not automatically faster than a cheaper bank on a laptop that accepts only 65W.
Capacity and usable energy are different
Use Wh = nominal battery voltage × mAh ÷ 1,000, using the battery’s nominal voltage, not USB output voltage. As a labelled arithmetic example, 25,000mAh at 3.7V is 92.5Wh. This is not a substitute for a model’s printed rating. The CAA packing guidance explains the calculation. Conversion and cable losses, and the laptop’s running load, reduce energy delivered into the laptop battery.
| Work pattern | What to choose | What to check |
|---|---|---|
| One laptop needing up to 100W USB-C | A verified 100W output may be sufficient. | Laptop accepted PD profiles and full-load demand. |
| Laptop needing supported 140W USB-C | A compatible 140W port and suitable cable. | The exact voltage/profile; total-output labels are insufficient. |
| Laptop plus phone | Compare the two-device power allocation. | Whether adding the phone reduces laptop power. |
| Flights and work trips | Start with printed Wh and airline rules. | Carry-on only; maximum two; no recharging the bank onboard. |
A useful comparison worksheet
Record your laptop model, its original adapter rating, the selected bank’s per-port allocation, cable rating, weight and final basket price. If you only need to finish a meeting, write down the extra runtime you actually need. For a runtime estimate, label every input: for example, an assumed 60Wh of usable output divided by an assumed 20W laptop load equals three hours. Neither input is a measurement of these products. Use your own observations before relying on that estimate for travel.
One attributed test, with its device conditions
In a November 2025 review, Macworld’s Simon Jary reported a 123% cumulative recharge score for a 14-inch M2 Pro MacBook Pro with a 69.6Wh battery using the Anker 26K model. That result belongs to the reviewer’s test and named laptop. It is not a 123% efficiency figure, a guarantee for a different MacBook, or a reason to ignore the current airline rules.
Frequently asked questions
Does 300W mean my laptop receives 300W?
No. It is a combined output rating. The selected Anker models advertise up to 140W on a single compatible USB-C output.
Is a 25,000mAh bank always flight-approved?
No. Check the printed Wh, condition, certification and your airline. CAA guidance allows up to 100Wh without operator approval and requires approval above 100Wh up to 160Wh; other restrictions still apply.
Can I recharge the power bank during a flight?
Current CAA power-bank rules say it must not be recharged onboard and should not be used to charge other devices onboard. Confirm the airline’s instructions.
Which has the best value for a 65W work laptop?
Compare the documented 65W-compatible output, weight and complete price. The lower-cost UGREEN is a sensible shortlist if its exact profiles match; extra headline watts alone do not justify the Anker premium.
Sources and citation notes
Manufacturer specifications are attributed to the linked source and exact model. Scenario advice is Desworthy editorial synthesis. Calculations are labelled; advertised maxima and retailer examples are not measured results for your own equipment. Cite the original source for specifications and this page for the comparison method.
- UGREEN SKU 75702: output and cables
- Anker A110A: per-port and total output
- Anker A1340: 140W output and capacity
- CAA: rules effective from 27 March 2026
- CAA: watt-hour calculation and packing
- Macworld, Simon Jary, 3 November 2025: attributed recharge test
Related UK buying guides
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Note: This article is for reference only.