Air travel with 4x 18650 batteries, OK in carry-on?

[klrman]

@Enderman

@olles

Actually you are required to take Li-Ion Batteries up to 100 Wh in your carry-on baggage - you must not check them in. Above 100 Wh total you need Airline Approval. One Li-Ion 18650 Battery has usually not more than 14 Wh, so 4 of them are 56 Wh, so you are safe. Detailled example Lufthansa https://www.lufthansa.com/content/dam/lh/documents/prepare-for-your-trip/baggage/dangerous-goods/Batteries_restrictions.pdf Olles

The restriction is per cell. You can definitely take more than 100Wh in separate cells.

Glad to know that, was about to limit my cells when travelling.