For frequent travelers, digital nomads, or simply travelers who don't want to be offline, keeping your devices fully charged is crucial. The portable power bank market has undergone a dramatic transformation in 2025—moving beyond just "how many mAh capacity?" to "how fast it charges, how safe it is, how smart it is, and how portable it is?"

What to Consider When Buying a Travel Power Bank?

Before diving into the models, here are the key criteria that matter today, and why they are increasingly important.

1. Airline/Flight Safety Capacity

If you're carrying a power bank, you'll likely be taking it on a flight. Most airlines allow power banks with a capacity of no more than 100 watt-hours (approximately 26,800 mAh for a 3.7-volt battery) on board without special approval.¹

Larger items may require airline approval or be prohibited from being carried on board. However, always keep your power bank in your carry-on baggage, not checked baggage.

2. Output Power and Device Compatibility

Charging a smartphone is one thing, charging a laptop, tablet, or multiple devices is another. By 2025, many top-of-the-line devices will support USB-C PD fast charging, with power outputs reaching 60W, 100W, or even over 140W. If you're traveling with a laptop, choose a power bank with high power output.

3. Size, Weight, and Design for Travel

Bulky chargers are unnecessary if you want to travel light or only carry carry-on luggage. Ultra-thin designs, integrated cables (so you don't have to carry extra cables), and compact sizes are all important.

4. Safety and Regulatory Compliance

Lithium-ion batteries pose risks. Some airlines are enforcing stricter regulations; in early 2025, one airline banned passengers from using power banks on board (but still allowed them in carry-on luggage) due to fire hazards.² Also check brand reputation, thermal control, certifications (UL/CE), and recall history.

5. Multi-Port and Simultaneous Charging

Travel often involves carrying multiple devices: phones, tablets, headphones, and possibly a laptop. A power bank that can charge multiple devices simultaneously and features USB-A + USB-C ports (preferably with wireless charging support) is an ideal choice.

Top Portable Power Banks for Travelers in 2025

1. UGREEN 25,000mAh 145W Power Bank

Best for: Laptops + Heavy Device Users

(Image from iMore, the copyright belongs to the original author)

If you frequently travel with your laptop (USB-C PD port)—for example, working on a plane, editing videos on the go, or simply want a charger that meets the needs of all your devices—this UGREEN power bank is the perfect choice. It boasts a massive 25,000mAh capacity and delivers up to 145W of output power via USB-C, allowing you to charge your laptop and phone/tablet simultaneously. Reviews describe it as a "powerful and practical travel essential."³

Travel Benefits:

● Multiple ports allow for simultaneous connection of three devices.

● Smart display shows output power and battery status (giving you accurate information about remaining power).

● Complies with airline size restrictions (capacity less than approximately 100Wh equivalent).

Note: Due to its high output power and large size, it may be heavier than the lightweight model. If you're looking for extreme portability, this might be a bit too much.

2. Anker 737 PowerCore 24K

Best for: Frequent travelers who need a high-capacity power bank but also want it to be easy to carry.

This power bank boasts a capacity of approximately 24,000 mAh and a charging power of up to 140W. It frequently appears on the 2025 "Best Travel Power Banks" list.³

Why it stands out:

● Perfect for charging your phone multiple times, charging your tablet once or twice, and even charging your laptop in emergencies.

● The intelligent digital display provides real-time input/output values (more transparent usage).

● A trusted brand with a well-developed ecosystem.

Note: It's slightly larger than ultra-compact models and may be more expensive.

3. Anker MagGo 10K Wireless Power Bank

Best for: iPhone/MagSafe users and those traveling light.

This slim wireless power bank is ideal for users who primarily carry their phone (and possibly headphones/tablet) and prioritize convenience over maximum capacity. It supports MagSafe magnetic charging and USB-C wired charging, and has a capacity of approximately 10,000 mAh.

Highlights:

● Ultra-thin design, easily fits into a small bag or coat pocket.

● Wireless charging means carrying one less cable.

● Simple design, plus a reliable brand reputation.

Note: Cannot charge laptops; can approximately fully charge a phone twice (depending on phone model). Wireless charging is generally slower than wired charging.

4. INU 20000mAh 22.5W Power Bank

Best for: Travelers on a budget who still want reliable performance.

Not everyone needs 140W or laptop-level output power. The INIU product strikes a good balance: a 20000mAh battery capacity, 22.5W fast charging, three output ports, and a digital display for showing battery level.

Reasons to choose it:

● More affordable than high-end brands.

● Sufficient capacity to charge your phone/tablet multiple times.

● Lightweight and portable without sacrificing quality.

Considerations: May lack the high output power for large laptops. Build quality may be slightly inferior compared to top-of-the-line models.

5. Anker Nano Power Bank (5K Slim)

Best for: Minimalist travelers and emergency backup power.

If you're just backpacking for a day trip, exploring the city, or simply want a lightweight "just in case" charger, this slim 5000mAh power bank will meet your needs. It's compact, supports magnetic wireless charging (depending on the model), and wired fast charging up to 20/30W.

Advantages:

● Can be carried in a trouser pocket or small crossbody bag.

● This is a good backup option when power outlets are scarce.

● Disadvantages: Limited capacity – cannot charge multiple devices multiple times. It's recommended to use a separate charger for heavy use.

Travel Tips

Put it in your carry-on luggage. Even if airlines allow 100Wh batteries, some ground staff may misunderstand; make sure the battery is easily accessible.

Check airline policies in advance. Some airlines are tightening regulations and even banning the use of power banks on board. For example, Singapore Airlines has banned the use of power banks on board since April 2025 (but still allows them to be carried).

Use the built-in display. If your charger has a display, you can see the actual remaining power and usage, which is very useful while waiting for your flight or when you can't find a power outlet.

Pay attention to temperature. If the temperature is unusually high (e.g., at an airport, in a car trunk), unplug the power cord or move the power bank to a cooler place.

Carry the cable/adapter with you. Even smart power banks may require a suitable cable (USB-C, USB-A) and a wall charger that supports high-power input.

Emergency backup mode. Keep a small "just in case" power bank (like a 5K) in your side pocket so you can charge your phone again even if your main power bank runs out of power.

Please responsibly recycle old power banks. Lithium batteries age over time and can become unsafe, even requiring recalls. For example, in 2025, over 1 million portable chargers were recalled due to fire incidents.⁴

Traveling in 2025 doesn't mean you have to abandon your electronic devices or compromise on power. With the right portable charger, you can stay connected, work efficiently, and be ready to embark on adventures—without adding extra burdens or worrying about battery life. Whether you're shuttling between airports, collaborating with colleagues in a foreign café, or capturing a sunset on a remote beach—your devices will need reliable power.

Sources:

1: https://www.powerbankguide.com/best-travel-powerbanks

2: https://nypost.com/2025/03/13/lifestyle/singapore-airlines-bans-passengers-from-using-power-banks-on-board

3: https://we3travel.com/top-travel-power-banks-2025

4: https://people.com/over-1-million-portable-chargers-recalled-after-19-reported-fires-and-explosions-caused-by-lithium-ion-batteries-11754626

References:

https://globegearhub.com/blog/best-portable-chargers-and-power-banks-for-travelers

https://www.techradar.com/news/top-portable-chargers

https://www.anker.com/blogs/power-banks/best-portable-charger-for-traveling