Anker 737 PowerCore 24K Review UK (2026)
24,000mAh, 140W USB-C output, three ports and a smart display — does Anker's flagship travel bank justify the £70 price?
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The Anker 737 PowerCore 24K is the best travel power bank for anyone carrying a laptop. The 140W USB-C output fast-charges a 14-inch MacBook Pro at full speed — no other travel-safe bank under £100 matches that. At 88.8Wh it's comfortably under the 100Wh ICAO limit. Under the new April 2026 ICAO 2-bank rule, you can carry two per person. The smart display showing exact watt input/output and remaining capacity is genuinely useful at airports.
£110 on Amazon UKWho is the Anker 737 for?
Anker's 737 series was designed for the traveller who carries a laptop and a phone. It's overkill for someone who only ever charges a phone — but for anyone who works from a laptop on flights or in airport lounges, this is the bank to buy.
It is the right travel power bank if you:
- Travel with a laptop and need fast charging without finding a wall outlet
- Want one power bank that handles laptop, phone, tablet and watch — three ports cover everything
- Fly internationally and need flight-safe capacity (88.8Wh, well under 100Wh ICAO limit)
- Like the certainty of a smart display showing exact remaining capacity
- Use a MacBook Pro 14" or 16" — 140W is enough for both at near-full speed
- Don't mind the 630g weight (heavier than 10,000mAh banks but reasonable for the capacity)
Real-world charging performance
| Device | Typical draw | Estimated runtime |
|---|---|---|
| iPhone 15 / 16 / 17 Pro | 27W PD | 4-5 full charges |
| Samsung Galaxy S24 Ultra | 45W PD | 3-4 full charges |
| iPad Pro 11" | 30W PD | 2-3 full charges |
| MacBook Air M2/M3 | 30-45W | 1.5-2 full charges |
| MacBook Pro 14" | 70-96W | 0.8-1 full charge |
| MacBook Pro 16" | 90-140W | 0.6-0.8 full charge |
| Nintendo Switch | 18W PD | 8+ full charges |
| Apple Watch | 5W | 30+ full charges |
Estimates assume 85-90% efficiency after voltage conversion losses. Laptop charges depend heavily on whether the screen is in use during charging.
What the Anker 737 does well
Three things set the 737 apart from cheaper 20,000-25,000mAh travel banks:
- 140W USB-C output — fast enough to drive a MacBook Pro 14" at full speed. Cheaper banks cap at 65-100W, which means slower charging on laptops.
- Smart display — shows exact input wattage, output wattage per port, and remaining capacity in mAh. Removes the guesswork of LED-bar power banks.
- Flight-safe at 88.8Wh — sits well under the 100Wh ICAO carry-on threshold. Under the April 2026 rule update, two units per passenger is allowed. Capacity is clearly printed on the device.
Pros and cons
- 140W USB-C output — best in class for laptop charging
- Three usable ports (2× USB-C + 1× USB-A) — handles a laptop, phone and watch at once
- Smart display showing real-time wattage and remaining capacity
- Flight-safe at 88.8Wh (well under ICAO 100Wh limit)
- ActiveShield 2.0 thermal monitoring — strong safety record
- 18-month Anker warranty
- Strong Amazon UK reviews — 6,700+ at 4.5 stars
- 630g is heavy — noticeable in a backpack vs 10,000mAh banks (200-280g)
- No built-in cable — needs you to carry separate USB-C cables
- No magnetic / wireless charging — wired only
- Around £70 — premium price compared to budget 20,000mAh banks
- 140W charger sold separately — using a lower-wattage charger triples recharge time
Anker 737 vs the main travel-safe alternatives
| Model | Capacity | Output | Charge time | Weight |
|---|---|---|---|---|
| Anker 737 PowerCore 24K | 24,000mAh / 88.8Wh | 140W USB-C | ~58 min | 630g |
| Anker Nano 10K 45W | 10,000mAh / 37Wh | 45W USB-C | ~50 min | 215g |
| UGREEN Nexode 12000 100W | 12,000mAh / 44Wh | 100W USB-C | ~50 min | 265g |
| Belkin BoostCharge Plus 10K | 10,000mAh / 37Wh | 30W USB-C | ~3 hrs | 230g |
If you need to charge a laptop on the go, the Anker 737 is the clear winner — nothing else under £100 matches its 140W output and 24,000mAh capacity. If you only ever charge phones and a tablet, the Anker Nano 10K 45W or UGREEN Nexode 12000 are lighter and cheaper. See our full travel power banks pillar guide for the complete UK roundup.
Should you buy the Anker 737 PowerCore 24K?
Yes, if you travel with a laptop and want one bank that handles everything. The 140W output, three ports, and 88.8Wh flight-safe rating combine into the strongest travel power bank under £100. If you only charge phones and earbuds, look at the Anker Nano 10K instead — half the price, a third the weight. For mixed laptop + phone travel, the 737 is the best buy in 2026.