Best Power Banks for Travel in 2026

Power banks are one of the few travel accessories with hard airline rules. Get the rules wrong and your power bank gets confiscated at the gate — not returned, confiscated. Get them right and you have a carry-on device that keeps your phone, tablet, and laptop alive through the longest layovers.

The critical rule: power banks must go in carry-on luggage. Never in checked bags. Lithium batteries in an unmonitored cargo hold are a fire hazard — airlines enforce this consistently.

Airline power bank rules: the numbers that matter

Airlines measure power banks in watt-hours (Wh), not milliamp-hours (mAh). Most power bank marketing uses mAh. The conversion:

Wh = mAh × voltage ÷ 1000

For standard lithium power banks at 3.7V:

• 20,000 mAh × 3.7 ÷ 1000 = 74 Wh
• 26,800 mAh × 3.7 ÷ 1000 = 99.16 Wh
• 27,000 mAh × 3.7 ÷ 1000 = 99.9 Wh

The thresholds:

Practical safe limit: Stay under 27,000 mAh (approximately 99 Wh) for carry-on use without any special approval process. Some airlines round down and treat anything over 26,800 mAh as requiring approval.

What "charges a laptop" actually means

Not all power banks charge laptops. Laptop charging via USB-C requires:

1. USB-C Power Delivery (USB-C PD) output on the power bank
2. Minimum 45W output for most ultrabooks; 65W or above for larger laptops
3. Your laptop must support USB-C charging (most laptops since 2018 do)

A power bank with only USB-A ports cannot charge a laptop via USB-C — USB-A delivers a maximum of 18W (Quick Charge), which is not sufficient for laptop charging. Only USB-C PD at 45W or above provides meaningful laptop charging.

Laptops that charge via USB-C:

• All MacBook Air and MacBook Pro models from 2018 onward
• Most Dell XPS models from 2019 onward
• Lenovo ThinkPad X1 Carbon
• Microsoft Surface Pro (some models via USB-C)
• Most Chromebooks

Laptops that do NOT charge via USB-C:

• Older MacBook Pros (pre-2018 with MagSafe)
• Many gaming laptops
• Some business laptops with proprietary charging connectors

Our top picks for travel power banks

1. Anker 737 Power Bank — The gold standard

Capacity: 26,800 mAh | Wh: approximately 99 Wh | Max output: 140W

The Anker 737 is the power bank that experienced travelers consistently recommend. At 26,800 mAh and approximately 99 Wh, it sits just under the 100 Wh no-declaration threshold. At 140W maximum output, it fast-charges a MacBook Pro at full speed (96W) while simultaneously charging a phone on the second port.

The digital display shows remaining charge percentage — more useful than the LED dot indicators found on cheaper banks. The 140W input means a full recharge in about 1.5 hours from a compatible charger.

Pros:

• 99 Wh — stays under the airline declaration threshold
• 140W output charges MacBook Pro at full speed
• Digital percentage display (not LED dots)
• Charges two devices simultaneously at high wattage
• Anker's track record for reliability and warranty support

Cons:

• Heavy at 642g — the most substantial option in this guide
• Large form factor — takes meaningful space in a carry-on
• Premium price

2. Baseus Blade 100W 20,000 mAh — Slimmest laptop-capable option

Capacity: 20,000 mAh | Wh: 74 Wh | Max output: 100W

The Baseus Blade solves the size problem. At 74 Wh and 100W maximum output it charges laptops, but the form factor is dramatically slimmer than the Anker 737 — the Blade is 1.2 cm thick, about the same as a small hardcover book. It slides flat into a laptop compartment without adding meaningful bulk.

At 74 Wh it's well within carry-on limits with no declaration required. The 100W output handles all ultrabooks at full speed.

Pros:

• Slim profile (1.2 cm thick) — packs flat in any bag
• 100W output charges most laptops at full speed
• 74 Wh — significantly under the 100 Wh threshold, no declaration needed
• Lighter than the Anker 737 at 410g
• Competitive price

Cons:

• 20,000 mAh provides less total capacity than the Anker 737
• Charging speed slightly lower than Anker's 140W flagship
• Display is LED indicator, not percentage readout

3. Anker 525 Power Bank 20,000 mAh — Best budget pick

Capacity: 20,000 mAh | Wh: 74 Wh | Max output: 65W

The Anker 525 is the budget-conscious pick for travelers who need laptop charging capability without paying flagship prices. At 65W output it charges most ultrabooks at full speed. At 74 Wh it's within carry-on limits with no declaration required. Anker's reliability track record means you're not gambling on an unknown brand.

The trade-off versus the Anker 737: 65W versus 140W maximum output, and no digital percentage display. For most travelers, 65W is sufficient.

Pros:

• Significantly lower price than the Anker 737
• 65W output handles most ultrabooks
• 74 Wh — comfortably under airline carry-on limits
• Anker brand reliability
• Smaller form factor than the 737

Cons:

• 65W limits charging speed on larger laptops (MacBook Pro 16-inch)
• LED dot indicator instead of percentage display
• Charges two devices more slowly than the 737

4. Goal Zero Sherpa 100AC — Best for adventure travel

Capacity: 25,600 mAh | Wh: 98 Wh | Max output: 100W USB-C + 100W AC outlet

The Goal Zero Sherpa 100AC has a feature no other power bank in this guide offers: a built-in AC outlet. This means you can charge devices that only accept a standard wall plug — older laptops with proprietary connectors, a CPAP machine on a camping trip, or devices that don't have USB charging.

At 98 Wh it stays under the 100 Wh airline threshold. The USB-C PD output is 100W. Goal Zero is built for adventure travel — the construction is more rugged than consumer electronics brands.

Pros:

• Built-in AC outlet — charges devices that need a wall plug
• 98 Wh stays under airline carry-on limits (no declaration required)
• 100W USB-C PD for full laptop charging
• Goal Zero build quality — designed for outdoor use
• Can be recharged via solar panel (Goal Zero ecosystem)

Cons:

• Heaviest option in this guide at 680g
• Premium price
• AC outlet adds complexity and potential failure points
• Larger form factor than slim alternatives

5. Mophie Powerstation USB-C XXL — Best premium brand option

Capacity: 20,000 mAh | Wh: 74 Wh | Max output: 90W USB-C

Mophie is the premium accessories brand of choice for Apple ecosystem travelers. The Powerstation USB-C XXL integrates cleanly with MagSafe charging via the included pass-through MagSafe attachment and charges a MacBook Air at full speed via the 90W USB-C PD output. The build quality is premium — the fabric exterior looks and feels like an Apple accessory.

At 74 Wh it's well within carry-on limits. At 90W it handles all Apple silicon MacBooks.

Pros:

• Premium build quality — fabric exterior
• 90W USB-C PD handles all Apple silicon MacBooks
• 74 Wh comfortably within airline limits
• MagSafe compatible via accessory
• Mophie's brand recognition for Apple ecosystem users

Cons:

• Premium price for 20,000 mAh versus Anker alternatives
• 90W is lower than Anker 737's 140W
• Apple ecosystem focused — less relevant for Android or non-Apple laptops

The multi-bank myth: why one big bank beats three small ones

Many travelers carry multiple 10,000 mAh power banks instead of one large one, thinking it's safer or easier to manage. It's not.

The math against multiple banks:

• Three 10,000 mAh banks = 30,000 mAh total, but at 37 Wh each = 111 Wh total. This EXCEEDS the 100 Wh no-declaration threshold — each bank is fine individually, but three of them combined is more power than one 26,800 mAh bank.
• At airport security, three separate power banks require three separate screenings and three separate times out of your bag.
• Three banks weigh more than one bank of equivalent capacity due to redundant housing, circuits, and connectors.

The actual rule: Airlines apply the Wh limit per individual battery, not cumulatively. So three 37 Wh banks are each fine individually. But you get less total power for more weight, more hassle, and more screening time.

One 26,800 mAh bank (approximately 99 Wh) beats three 10,000 mAh banks on every metric: weight, volume, charging speed, and airport security throughput.

Which power bank to buy based on your devices

MacBook Pro 14-inch or 16-inch (100W+ USB-C): Anker 737 (140W) or Goal Zero Sherpa 100AC (100W AC)

MacBook Air M1/M2/M3 (65W USB-C): Any pick in this guide charges it at full speed

Windows ultrabook (45–65W USB-C): Baseus Blade, Anker 525, or Mophie XXL — all sufficient

Phone and tablet only (no laptop): Anker 525 is the right price-to-performance pick; no need for the 140W flagship

Adventure travel with rugged use: Goal Zero Sherpa 100AC — the AC outlet and build quality justify the weight