You may bring loose lithium batteries in your hand baggage if they are under 100 Wh per battery.
If you wish to bring loose batteries that exceed 100 Wh, you must obtain approval from the airline. In that case, you may bring a maximum of 2 batteries, and they must not exceed 160 Wh each. Additionally, the equipment intended for use with the batteries must be carried together with them.
If you wish to bring lithium-ion batteries over 160 Wh, they must be transported as fully regulated dangerous goods. You can read more about this on the Danish Civil Aviation and Railway Authority’s website.
Batteries that are part of an electronic device (e.g. mobile phones, laptops, etc.) may only be brought in hand baggage. Most electronic devices such as tablets, smartphones, and laptops contain batteries smaller than 100 Wh and can be freely carried in hand baggage.
If you are unsure about the battery size, you can check the manufacturer’s website. Since some airlines have their own specific rules in this area, it is always a good idea to contact the airline before departure.
Loose batteries are not permitted in checked baggage.
Relevant links
Read more about the rules for dangerous goods and find the full regulatory framework at trafikstyrelsen.dk
Read IATA’s guidance on battery regulations (opens in new window)