Can I bring my own powerbank to a festival? Airline limits, gate rules and hand-in charging

Yes, you can bring your own powerbank to most festivals. Airlines allow them in carry-on hand luggage up to 100 watt-hours (Wh), and standard festival powerbanks sit well under that limit. The one rule with no exceptions: powerbanks must go in your cabin bag, never in checked luggage. At the festival gate itself, personal powerbanks are not on the banned items list at any of the major Nordic events. If you would rather skip the carrying entirely, hand-in charging at some festivals lets you drop off your device or powerbank and collect it again later.

Do festivals let you bring your own powerbank?

Personal powerbanks are not banned at major Nordic festivals. Nothing in the official published rules at Roskilde, Smukfest, Copenhell, Ruisrock, or Provinssi prohibits them. Festivals routinely ban generators, large battery stations, and items that pose a fire or safety risk, but a standard lithium-ion powerbank carried in your bag is not in that category.

If you want to be certain before you travel, check the official practical-info page for your specific festival each year, since rules do change. The Nordic festival bag rules guide covers what is and is not allowed at twelve major festivals across Denmark, Norway, and Finland, sourced directly from each festival's published guidelines.

What does the airline limit actually mean?

The international framework that most airlines follow, published by the International Air Transport Association (IATA), sets three tiers for lithium batteries and powerbanks in hand luggage:

• Under 100 Wh: Allowed in carry-on baggage without any airline approval. This covers the vast majority of powerbanks used at festivals.
• 100 to 160 Wh: Allowed in carry-on with individual airline approval, typically limited to two units per passenger. You need to check before you travel.
• Over 160 Wh: Not permitted on passenger aircraft at all.

All powerbanks, regardless of capacity, are banned from checked luggage. The reasoning is practical: if a battery goes into thermal runaway in the cabin, the crew can respond. In the hold, they cannot.

Some carriers apply the rules more strictly than others. Ryanair, for instance, enforces the 100 Wh ceiling without flexibility and requires powerbanks to be stored under the seat in front of you, not in the overhead locker. SAS confirms it follows IATA guidance, meaning powerbanks up to 100 Wh travel freely and 100 to 160 Wh units may be carried with approval. Before you pack a large powerbank for a festival that involves a flight, check your airline's own page for current policy since individual carriers can tighten these rules at any time.

How do you know if your powerbank is under 100 Wh?

Most powerbanks sold for personal use list the capacity in milliamp-hours (mAh) on the label. To convert mAh to watt-hours, multiply by the battery voltage (typically 3.7V for lithium-ion cells) and divide by 1,000. In practice:

• 10,000 mAh = approximately 37 Wh
• 20,000 mAh = approximately 74 Wh
• 27,000 mAh = approximately 100 Wh

A 20,000 mAh powerbank sits at around 74 Wh, comfortably within the 100 Wh cabin allowance on all airlines. If you are unsure about your specific unit, look for a Wh figure printed directly on the device. Manufacturers are increasingly required to label it that way. If the label is missing or unclear, check the brand's product page before you reach the airport. Security staff can and do confiscate unlabelled or oversized batteries.

Tips for carrying a powerbank through an airport

A few things that make security easier:

• Keep your powerbank in your cabin bag, not buried in your suitcase. If your checked bag gets flagged, the battery has to come out anyway.
• If you are carrying a spare battery alongside a powerbank, protect the terminals. Original packaging works, as does a small zip-lock bag or electrical tape over the contacts.
• A powerbank that shows visible damage, swelling, or a cracked casing will be flagged at security and should not be transported.
• Some airlines allow charging personal devices from a powerbank during the flight, but not during taxi, takeoff, or landing. Using the powerbank to charge itself (plugged into an in-seat USB port) is restricted on several carriers. Check the rules for your flight before you board.

What if you would rather not carry your own?

Carrying a large powerbank for a multi-day festival is one option. But it is not the only one. At festivals where Volt operates, there are two alternatives worth knowing about.

Hand-in charging is exactly what the name describes. You bring your own phone, powerbank, or SOUNDBOKS battery to a Volt point on site. The team keeps it safe and charged while you are out watching sets. You collect it when you are ready. Nothing to rent, no deposit. The service is available at festivals including Smukfest, Copenhell, Swedenrock, Ruisrock, Provinssi, and Jelling, among others. For current availability at your festival, check the specific event page at the time you book.

The Volt Charging Service takes a different approach. Instead of leaving your device somewhere, you rent a Volt-Charger, which is a pocket-sized powerbank you carry with you throughout the festival. When it runs flat, you swap it for a full one at any Volt booth. You return it at the end of the event and get your deposit back. This is the option for festival goers who want a charge in their pocket at all times without having to plan a drop-off and pick-up. More on how the two options compare and which suits your trip is covered in the swap pass versus pay per use guide.

A third option at some festivals: Volt Self-Service Charging stations. These freestanding stations have built-in cables, so you top up directly at the station rather than carrying anything away. Useful if you are camping close to one, less convenient if the stages are far across the site.

Frequently asked questions

Can I put my powerbank in my checked suitcase?

No. All lithium batteries, including powerbanks, must travel in carry-on hand luggage. This is a hard rule under IATA dangerous goods regulations and is enforced consistently across airlines. If security finds a powerbank in your checked bag, it will be removed before the bag is loaded.

How many powerbanks can I bring on a flight?

For units under 100 Wh, most airlines apply no specific quantity limit beyond general baggage rules. For units between 100 and 160 Wh, the usual limit is two per passenger with airline approval. Carrying three or more large units is not something any standard carrier will approve.

What is the difference between hand-in charging and the Volt Charging Service?

With hand-in charging, you drop off your own device or powerbank at a Volt point and collect it later, fully charged. With the Volt Charging Service, you rent a Volt-Charger (a powerbank) and carry it with you, swapping it for a fresh one each day at a Volt booth. Hand-in charging is good if you already have your own powerbank and just need it topped up on a longer festival day. The Volt Charging Service is better if you want to keep your hands free and have a charge available without planning a collection trip.

Do I need to declare my powerbank at the airport?

In most countries, no formal declaration is required for personal powerbanks under 100 Wh. You do not fill out a form. That said, security staff will likely scan it separately if it is large, so keep it accessible at the top of your cabin bag rather than buried.

Can I bring a powerbank to a one-day city festival?

Yes. City festival security checks follow the same approach as camping festivals: generators and large power stations are typically banned, but personal powerbanks in your bag are not. For more detail on what to bring to a one-day event, the Danish festival bag rules guide covers arena policies across the major events.

What if my phone runs flat during the festival even with a powerbank?

If you run out of charge on both your phone and your powerbank, hand-in charging points are your fallback at Volt-operated festivals. You can leave your powerbank to charge and pick it up later. Recharge zones at some festivals also let you plug in directly for a fee. The full guide to keeping your phone alive at a festival weekend covers every option from reducing battery drain to choosing the right charging service before you arrive.