Stay under 100Wh
Roughly 27,000mAh. Above that, most airlines refuse it or require written approval. Always pack it in hand luggage.
Buying guide
Best power bank for travel from the UK
A travel power bank has to clear airline rules, fit a carry-on and still push enough watts to charge a laptop. Here is how to choose, plus the models we track for UK and European trips.
The three rules that matter
Match watts to your laptop
65W covers ultrabooks, 100W covers most 16-inch machines. Capacity in mAh says nothing about charging speed.
Bring a 5A cable
Anything over 60W needs an e-marked USB-C cable, or the power bank silently throttles to a slower rate.
Laptop-capable power banks (60W and above)
AnkerLuxury
Anker Prime 27,650mAh (250W)
250W · 3 ports · €150-€180
Check Amazon dealAnkerLuxury
Anker 737 Power Bank (PowerCore 24K)
140W · 3 ports · €110-€140
Check Amazon dealUgreenPremium
Ugreen Nexode 20,000mAh 130W
130W · 3 ports · €70-€90
Check Amazon dealBaseusPremium
Baseus Blade 100W Laptop Power Bank
100W · 4 ports · €60-€80
Check Amazon dealShargeLuxury
Shargeek 100 Storm2 Power Bank
100W · 4 ports · €180-€220
Check Amazon dealAnkerLuxury
Anker Laptop Power Bank 25,000mAh 100W
100W · 3 ports · €80-€110
Check Amazon dealINIUBudget
INIU 25,000mAh 100W Power Bank
100W · 3 ports · €50-€70
Check Amazon dealBaseusPremium
Baseus 20,000mAh 100W Laptop Power Bank
100W · 2 ports · €55-€75
Check Amazon dealPocket and phone-first power banks
BaseusBudget
Baseus Magnetic Power Bank 30W 10K
30W · 2 ports · €30-€40
Check Amazon dealBaseusBudget
Baseus Let's Go Cord Power Bank (20K 30W)
30W · 3 ports · €35-€48
Check Amazon dealAnkerBudget
Anker Nano Power Bank with Built-in USB-C
22.5W · 1 ports · €25-€35
Check Amazon dealINIUBudget
INIU 10,000mAh Slim Power Bank
22.5W · 3 ports · €15-€22
Check Amazon dealShargePremium
Sharge Capsule Gravity Power Bank
20W · 2 ports · €40-€50
Check Amazon dealShargePremium
Sharge Flow Portable Power Bank (10K)
20W · 2 ports · €40-€50
Check Amazon dealAnkerPremium
Anker MagGo Power Bank 10K (Qi2)
15W · 2 ports · €60-€85
Check Amazon dealAnkerBudget
Anker Nano Power Bank with Built-in Lightning
12W · 1 ports · €20-€30
Check Amazon dealAnkerBudget
Anker 521 Magnetic Battery (PowerCore 5K)
7.5W · 1 ports · €35-€45
Check Amazon dealTravel power bank questions
What size power bank can I take on a plane?
Airlines follow the IATA rule of 100Wh per battery in hand luggage, which is roughly 27,000mAh at 3.7V. Power banks must travel in the cabin, never in checked baggage. Some carriers allow up to 160Wh with prior approval, so check before flying with anything larger.
What wattage do I need to charge a laptop?
A 13-inch ultrabook charges comfortably from 45–65W, a 14-inch MacBook Pro wants 65–96W, and a 16-inch or gaming laptop needs 100W or more. Look at the USB-C Power Delivery output of the power bank, not just its capacity in mAh.
Do I need a special cable for fast charging?
Yes above 60W. Charging at 100W or 140W requires a 5A e-marked USB-C cable. Most bundled cables are rated 60W, which quietly caps your charging speed even when the power bank can do more.
Is a slim power bank better for travel?
For carry-on travel, yes. Flat, slim-profile power banks slide into laptop sleeves and seat pockets, spread weight better in a backpack, and still deliver high wattage thanks to modern GaN circuitry.
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