When preparing for a flight, one of the key concerns for travellers in the UK is whether they can bring a portable power bank onboard. With the growing reliance on electronic devices during trips, having a reliable power supply is essential, especially for long-haul flights or remote destinations.
However, airlines and aviation authorities impose certain restrictions on carrying power banks because of the potential safety risks posed by batteries. This article focuses on whether a 20000 mAh portable power bank is allowed on flights departing from the UK. While the rules can vary by airline and destination, understanding the guidelines is crucial to ensure a smooth journey.
Further, we will explore the essential factors to look at when choosing a solar power station for travel from a reliable brand like Jackery. After all, a portable battery pack is your ticket to staying charged and connected, no matter where your travels lead.

Portable Power Banks on Flights: Things You Should Know
- Understanding mAh and Wh
Before diving into airline regulations, it is essential to understand two key terms: mAh (milliampere-hour) and Wh (watt-hour). These terms are used to measure the capacity of a portable power bank and determine how much charge it can store.
- mAh: refers to the amount of charge a battery can hold, which is a direct indicator of how much power your portable power bank can provide to your devices. For example, a 20000 mAh portable battery pack can theoretically charge your smartphone multiple times before needing a recharge itself.
- Wh: measures the energy stored in a battery, and this is the unit used by airlines and aviation authorities to assess the potential risk of carrying a battery onboard. It gives a better understanding of the energy content, which helps define safety standards for air travel.
To convert mAh to Wh, use the formula: Wh=mAh ×Volts/1000
For instance, a 20000 mAh portable power bank that operates at 3.7 volts would have a Wh of approximately 74 Wh (20000 x 3.7 / 1000).
- Common Airline Regulations on Carrying Power Banks
Airline regulations for carrying portable power banks are generally quite strict due to the safety concerns surrounding lithium-ion batteries, which are commonly used in these devices. Most airlines follow regulations set by the International Air Transport Association (IATA), which provides standard rule recommendations for carrying power banks in hand luggage.
Here is a breakdown of standard guidelines for portable power banks outlined by IATA:
- Up to 100 Wh: You can generally bring portable power banks with a capacity of up to 100 Wh in your carry-on baggage. This typically includes most power banks under 20,000 mAh. You can usually carry more than one of these devices, but they must be individually below the limit.
- 100 Wh to 160 Wh: Power banks with a capacity between 100 Wh and 160 Wh are typically allowed. However, the number of them that you can pack in your carry-on baggage is less and may require approval from the airline.
- Above 160 Wh: These battery banks are considered “Dangerous Goods” and are prohibited from being packed in carry-on or checked baggage. Instead, they should be transported as cargo following the IATA Dangerous Goods Regulations.
- Why Are There Capacity Limits on Power Banks?
The primary reason for capacity limits on power banks is safety. Here are the main safety concerns on travelling with a power bank:
- Fire Hazard: Lithium-ion batteries can become unstable if damaged or improperly handled, potentially leading to fires. A fire in the confined space of an aircraft can be particularly dangerous.
- Thermal Runaway: In extreme cases, lithium-ion batteries can experience a thermal runaway, where the battery overheats uncontrollably. This is why airline regulations consider the battery’s capacity—larger batteries are more likely to cause a dangerous situation.
- Storage and Impact: Larger power banks store more energy, meaning if something were to go wrong, the results could be more severe than with smaller devices. For this reason, most airlines prefer to limit capacity to minimise potential risks.
- Is a 20,000 mAh Portable Power Bank Allowed in Flight?
Now, the big question: Is a 20,000 mAh portable power bank allowed in flight?
In general, a 20,000 mAh portable power bank will likely fall under the 100 Wh threshold, as most 20,000 mAh power banks operate at 3.7V, which gives a capacity of about 74 Wh (20,000 mAh × 3.7V ÷ 1000 = 74 Wh). This means it is generally allowed in your hand luggage on UK flights, as it is well within the 100 Wh limit. However, there are exceptions, so it is crucial to check the exact voltage and Wh rating of your specific portable battery pack as well as the airline’s regulations.
Jackery Explorer 100 Plus Portable Power Station: A Perfect Travel Companion for Flight Trips
For travellers looking for a reliable power source on long flights, the Jackery Explorer 100 Plus Portable Power Station can be an excellent option. This compact and efficient portable power station is designed to meet airline regulations and provide ample power for your devices throughout your journey.

Here are the key features of this Jackery portable power station for flights:
- Capacity: The Jackery Explorer 100 Plus Portable Power Station offers a capacity of 99Wh, which is well within the allowed limit for most airlines. With this capacity, the portable power bank provides enough energy to charge devices such as smartphones, tablets, and laptops, making it a perfect travel companion without exceeding the 100 Wh threshold.
- Multiple Charging Ports: This Jackery portable power station has multiple charging options, including USB-A and USB-C outlets. This versatility allows travellers to charge various devices simultaneously at up to 128 W. The multiple ports are especially useful on long-haul flights or layovers, where staying connected is essential.
- Lightweight and Portable: Weighing just 965 grams, the Jackery Explorer 100 Plus Portable Power Station is lightweight and easy to carry. Its compact design ensures that it won’t add significant weight to your carry-on bag, making it a practical choice for air travel.
- Fast Charging: This portable power station supports quick charging, enabling you to quickly recharge your devices while waiting at the airport.
- Safe and Compliant for Air Travel: The Jackery Explorer 100 Plus Portable Power Station utilises stable LiFePO4 battery cells. Plus, it comes with enhanced safety features, including 6 forms of protection like short circuit protection and over temperature protection, meeting the airline requirements for power banks.
Why Choose the Jackery Explorer 100 Plus Portable Power Station?
Travelling with a portable power bank can be a lifesaver, especially when you are heading on long flights or when your devices are crucial for work or leisure during travel. The Jackery Explorer 100 Plus Portable Power Station offers just the right amount of power to keep your gadgets running without worrying about violating airline regulations. Its compact size, fast charging, and versatile charging ports make it an ideal companion for any trip, ensuring you are always connected and powered up when you need it most.
Key Considerations for Choosing Portable Power Banks for Travels
When selecting a portable power bank for travel, several factors need to be considered to ensure that it meets your specific needs, including:
- Battery Capacity
The capacity of a power bank is one of the most important factors to consider. Measured in mAh (milliampere-hours) or Wh (watt-hours), the capacity indicates the amount of charge the portable power bank can store and the number of recharges it can provide to your devices. A smaller capacity (around 5,000 mAh to 10,000 mAh) may suffice for short trips. However, for longer journeys or travellers using power-hungry devices, a higher capacity (20,000 mAh or more) will offer more flexibility.
- Power Output
The power output determines how quickly a portable power bank can charge your devices. If you want faster charging, look for a model that supports higher output rates, such as 18W, 30W, or even 60W, particularly for devices like laptops and tablets. Ensure the portable power bank is compatible with your devices’ charging requirements to avoid slow charging times.
- Size and Weight

Depending on the type of travel, size and weight can make a big difference. For those travelling with light carry-on luggage or embarking on long trips, a portable power bank with a compact design and lightweight build will be essential.
However, larger, more powerful portable battery packs may be necessary for longer trips where multiple devices need charging. It is vital to find a balance between capacity and portability.
- Safety Features
Safety enhancement is a crucial consideration when choosing a portable power bank for travel. Look for features such as overcharge protection, short-circuit protection, temperature control, and surge protection. These safety features will help safeguard your devices from damage, particularly during air travel, where devices are subject to stricter regulations.
- Charging Capacity
Fast charging is an important feature, especially for travellers who need their devices ready in a short amount of time. Many portable power banks support fast charging technologies like Quick Charge or Power Delivery (PD), which can significantly reduce charging time.
Moreover, some portable power banks allow solar charging, which makes them ideal for outdoor enthusiasts travelling to remote areas.
- Multi-Device Charging Capacity
A portable power bank with multi-device charging capacity is essential if you have several devices to charge. Some portable battery packs offer multiple USB-A, USB-C, or AC outlets, allowing you to charge all your electronics simultaneously. This is especially useful for business travellers or families that need to charge multiple devices at once.
- Durability and Build Quality
Durability is crucial for travel-ready portable power banks. Opt for models made of high-quality materials like aluminium or reinforced plastic. For rugged trips like camping or hiking, choose waterproof or rugged designs to safeguard your device from the elements.
- Brand Reputation
Choose a portable power bank from a reputable brand, as it can offer quality, performance, and reliability in one package. Reputable brands also offer better warranties, customer support, and overall product longevity.
- Warranty and Customer Support
Look for portable power banks with at least a one-year warranty. Check if the solar brand offers responsive customer service in case you need assistance or need to address any potential problems with the product.
FAQs about Power Banks for Travels
- How Many Power Banks Can I Take on a Plane?
Airlines typically allow up to two portable power banks in your hand luggage, depending on their capacity. Each power bank must not exceed 100 Wh (or 160 Wh with prior airline approval). Check with your airline for specific policies.
- Can I Charge My Portable Power Bank When Flying?
Yes, most modern aircraft provide USB ports or AC outlets, allowing you to charge your portable power bank during the flight. However, charging speeds may be slower due to lower power outputs on planes.
- Which is Safer, Lithium-Ion or LiFePO4 Power Banks?
Both are safe when used correctly, but LiFePO4 power banks are considered safer due to their stable chemistry, lower risk of overheating, and longer lifespan. Lithium-ion batteries are common, but proper handling is crucial to avoid safety issues.
- Is a Portable Solar Power Bank Worth Buying for Travel?
A portable solar power bank is ideal for outdoor adventures or locations with limited access to electricity. It offers sustainable charging but relies heavily on sunlight, which may not be consistent.
- What Size Power Station Do I Need for Camping Trips?
For camping, a power station with 300-500Wh capacity is usually sufficient to charge phones, cameras, and small devices. Larger capacities may be needed for powering lights or small appliances.
- What Size Power Station Do I Need for Road Travel?
For road trips, a power station between 500 and 1000 Wh is ideal. It provides ample power for multiple devices, laptops, and even small car appliances like mini-fridges.
Conclusion
A 20,000 mAh portable power bank is generally allowed on flights, as it typically falls within the 100 Wh limit set by airlines. However, always check the specific Wh rating and airline regulations to avoid issues during your journey.
The Jackery Explorer 100 Plus Portable Power Station is an excellent choice for those seeking a reliable option. It meets airline requirements, has multiple charging ports, and provides ample power for various devices. With this portable power station, your devices can stay charged and connected during your travels across the UK.