International travel in 2025 demands reliable power. Whether you’re navigating a foreign city with your smartphone, capturing memories on a tablet, or closing a deal on your laptop, a dead battery can bring your journey to a halt. The right portable charger is an essential travel companion, ensuring you stay connected from departure to return.
Choosing the best battery pack involves balancing capacity, portability, and charging speed. With options ranging from ultra-slim power banks with built-in cables to high-capacity units capable of powering a laptop, there’s a perfect solution for every type of traveler. Our roundup features the top 10 battery packs designed to meet the unique challenges of international travel, keeping your devices powered no matter where your adventures take you.
The Best Battery Packs for Your Next International Trip
- Charmast Portable Charger with Built in Cables
- PWRMobile PWR Travel PRO 5-in-1 Power Bank
- Portable Charger with Wall Plug for European Travel
- INIU Power Bank, 25000mAh 100W USB C Laptop Portable Charger
- Anker Power Bank(PowerCore 10K),Compact Travel-Ready
- UGREEN 20000mAh 100W Power Bank, Nexode Portable Charger
- Anker Portable Charger, 325 Power Bank (PowerCore Essential 20K)
- Baseus Laptop Power Bank, 20800mAh 145W Portable Charger
- Anker Power Bank(PowerCore 10K), Compact Travel-Ready
- Anker 737 Power Bank (PowerCore 24K)
Charmast Portable Charger with Built in Cables
This ultra-slim power bank from Charmast is designed for the traveler who wants to minimize cable clutter. It features four essential cables built right in, covering old iPhones, USB-C, and Micro-USB devices. This means you can charge virtually any phone or tablet without needing to pack a single extra cord, making it a true all-in-one solution.
With a total of six outputs, you can charge multiple devices at the same time. The clear digital LED display shows the exact battery level, so you are never surprised by a low charge. Its slim and lightweight profile is even more pocket-friendly than most smartphones, making it an ideal companion for daily carry and international travel.
PWRMobile PWR Travel PRO 5-in-1 Power Bank
The PWR Travel PRO offers ultimate charging flexibility with its 5-in-1 system. It combines a 10,000mAh battery with built-in cables and 15W wireless charging. This allows you to charge up to three devices simultaneously, making it a versatile hub for all your gadgets without the need for extra accessories.
For fast charging, it includes a 20W USB-C Power Delivery port that can charge compatible devices up to 50% in just 30 minutes. The inclusion of a protective case adds an extra layer of durability for travel. Its compact design and all-in-one functionality make it a reliable power source for work or vacation.
Portable Charger with Wall Plug for European Travel
This power bank is a standout for travelers heading to Europe, the UK, or Australia. It comes with integrated, foldable wall plugs for Type C (Europe), Type G (UK), and Type I (Australia) outlets. This eliminates the need for a separate power adapter, saving space and weight in your luggage.
Along with its regional plug versatility, it also includes built-in charging cables for your devices. The 10,000mAh capacity provides sufficient power for a day of sightseeing, and it comes with a hard carrying case for added protection during your travels. It’s a truly tailored solution for the international jet-setter.
INIU Power Bank, 25000mAh 100W USB C Laptop Portable Charger
The INIU Power Bank is for the traveler who needs serious power. Its massive 25000mAh capacity can charge a MacBook Pro 1.2 times or an iPad Mini multiple times, providing enough energy to last for a week of moderate use. The 100W USB-C output means it can charge a MacBook Pro up to 50% in just 30 minutes.
INIU emphasizes safety and quality, backing this power bank with a 3-year warranty. This makes it a dependable choice for powering not just phones, but also tablets, Steam Decks, and laptops. It’s an ideal power source for long-haul flights, business trips, or remote work sessions.
Anker Power Bank (PowerCore 10K) 2-Pack
This Anker PowerCore 10K 2-pack offers exceptional value and reliability. You get two of one of the slimmest and lightest 10,000mAh portable chargers on the market. Each one provides approximately two full charges for an iPhone 15, making it perfect for sharing with a travel companion or keeping one as a backup.
Its compact and lightweight design is engineered for toughness, having been certified to survive a 3.2-foot drop test. With Anker’s trusted PowerIQ technology for optimized charging speeds, this set ensures you and your travel partner will never be without power.
UGREEN 20000mAh 100W Power Bank
The UGREEN Nexode power bank combines high capacity with blazing-fast charging speeds. Its 20000mAh battery can charge an iPhone 15 Pro up to 4.5 times and can even provide a full charge to a MacBook Air. The 100W output can charge a 16-inch MacBook Pro to 42% in just 30 minutes.
A key feature is its 65W self-recharging capability, allowing the power bank itself to be fully charged in only 1.6 hours. The digital display clearly shows the remaining battery percentage. With three ports, it can charge multiple devices at once, making it a powerful hub for all your tech on the go.
Anker Portable Charger (PowerCore Essential 20K)
The Anker 325 Power Bank offers a massive 20,000mAh capacity in a reliable package. This capacity is enough to provide nearly four full charges for an iPhone 15, ensuring your phone stays powered through multiple days of travel. It features two USB-A ports and a bi-directional USB-C port.
Anker’s PowerIQ and VoltageBoost technology ensure a fast and stable charge for a wide range of devices, from smartphones to low-power accessories like wireless earbuds. It’s a straightforward, high-capacity workhorse from a brand known for quality and durability in the power accessory space.
Baseus Laptop Power Bank, 20800mAh 145W Portable Charger
For travelers with power-hungry laptops, the Baseus power bank is a top contender. It delivers a massive 145W of distributed power, with up to 100W available for a single device like a 14-inch MacBook Pro, which it can charge to 55% in 30 minutes. With four ports, you can charge a phone, tablet, earbuds, and laptop simultaneously.
The 20,800mAh capacity is flight-approved and can recharge an iPhone multiple times. A digital display keeps you informed of the power level. This power bank is designed to unplug your workflow, providing desktop-level charging power wherever your travels take you.
Anker Power Bank (PowerCore 10K) 1-Pack
This single Anker PowerCore 10K offers the same excellent features as the 2-pack in a solo unit. It stands out as one of the slimmest and lightest 10,000mAh portable chargers available, providing about two full charges for an iPhone 15. Its compact size and minimal weight make it incredibly easy to pack and carry.
Engineered for durability, it has been tested to withstand drops from over three feet. Combined with Anker’s reliable charging technology, this power bank is a trustworthy and portable source of backup power for any traveler who values a minimalist and lightweight setup.
Anker 737 Power Bank (PowerCore 24K)
The Anker 737 Power Bank, also known as the PowerCore 24K, is a premium high-capacity charging solution. While specific details for the 2025 model are to be confirmed, Anker’s 737 series is known for combining large battery capacities with high-speed GaN charging technology. It is typically designed to quickly charge multiple devices, including laptops.
You can expect a robust build quality, advanced safety features, and a clear digital display from this model. As a flagship product from a leading brand, the Anker 737 is positioned for the traveler who refuses to compromise on power or performance during their international journeys.
Buying Guide: How to Choose the Best Battery Packs for International Travel in 2025
I never board an international flight without a reliable battery pack. It is my lifeline for navigating foreign cities, translating languages, and staying connected. But not all power banks are created equal, especially when you are crossing borders. Here is what I always look for when picking the best battery packs for international travel.
First, capacity is king, but there is a catch. I measure capacity in watt-hours (Wh), not just milliampere-hours (mAh). Why? Because many airlines enforce a strict limit of 100Wh per power bank for carry-on luggage. A 27,000mAh pack at 3.7V is roughly 100Wh, making it the sweet spot. Going over this limit can mean your pack gets confiscated at security. For my typical two-day trip, a 10,000mAh to 20,000mAh pack is plenty to recharge my phone and earbuds a few times.
Next, I check the ports. A pack with both USB-C and USB-A ports gives me the most flexibility. The USB-C port should support Power Delivery (PD) for fast charging modern phones and even some laptops. I also make sure it can charge itself via USB-C, so I only need one cable. For output, seeing at least 18W is my minimum, but 30W or more is ideal if I need to top up a tablet quickly between connections.
The physical design matters more than you think. I prefer a slim, pocketable design that does not add much weight to my bag. A built-in charging cable, especially a retractable one, is a game-changer, as it is one less thing to forget in a hotel room. Some newer models even have built-in wall prongs, so I can plug the battery pack directly into an outlet to recharge, eliminating the need for a separate charging brick. This is a huge space-saver.
Finally, I consider extra features. A clear digital display showing the exact remaining percentage is far more useful than four blinking LEDs. For peace of mind, I only buy packs from reputable brands that include robust safety features like over-current and short-circuit protection. After all, this device is going in my bag with my passport and other essentials. Getting the right battery pack makes all the difference between a stressful journey and a smooth one where I am always powered up.
FAQ
What is the airline limit for power banks on a plane?
Most international airlines allow power banks with a capacity of up to 100 watt-hours (Wh) in your carry-on luggage. You can typically bring two larger packs between 101Wh and 160Wh with airline approval, but anything over 160Wh is usually prohibited. Power banks are never allowed in checked baggage. To check your pack, look for the Wh rating on the label, or calculate it yourself: (mAh * Voltage) / 1000 = Wh. A standard 20,000mAh battery at 3.7V is about 74Wh, which is well under the limit.
Can I use my battery pack while flying?
Yes, you can generally use your battery pack to charge your devices during a flight. However, you must follow the crew’s instructions, especially during takeoff and landing. Some airlines may request that you stow larger electronic accessories during these critical phases. It is always a good practice to keep your battery pack and cables accessible so you are not rummaging through your bag mid-flight.
How do I choose between mAh and watt-hours (Wh)?
mAh, or milliampere-hours, tells you the raw capacity of the battery’s cells. Wh, or watt-hours, is a more accurate measure of the actual energy stored, accounting for voltage. Since airline limits are based on Wh, that is the number you should pay the most attention to. When comparing the best battery packs for international travel in 2025, I always look at the Wh first to ensure compliance, and then the mAh to get a general idea of how many phone charges I can expect.
Are power banks with built-in wall plugs better for travel?
I find them incredibly convenient. A power bank with flip-out AC prongs means you can charge the pack itself by plugging it directly into a wall outlet. This eliminates the need to pack a separate USB wall charger and cable just for the power bank, saving precious space and weight in your bag. It is one of my favorite features in modern travel-friendly models.
How many times can a 20,000mAh battery pack charge my phone?
This depends on your phone’s battery capacity and efficiency losses during charging. As a rough estimate, a 20,000mAh pack has enough energy to fully charge a modern smartphone with a 5,000mAh battery approximately three to four times. Remember, no transfer is 100% efficient, so you will always get slightly fewer full charges than the simple math suggests.