I plan to take the Osmo Pocket with me on two weeks vacation in Europe.
What is your best suggestion how to charge it during this time.
Thanks for your kind advice.

Adam

Any battery pack will do... just make sure that it has higher capacity than the OP (875 mAh) to get multiple charges.
I personally use a 30$ Spiegen F703S Portable Battery (3350mAh). Quite small (more or less the size of the OP), very light and can charge the OP approx. 3 times.

Most modern car in Europe has USB point.

Thank you very much. I hesitate about security check in the airport.

How said: USB is in every car. You can use a power bank or such an
extension grip with built in battery:

Hello and good day Adam. Thank you for choosing DJI and for the reaching out. I hope you'll get the best recommendation here from our valued DJI Members and Customers on how to charge the DJI Osmo Pocket on the road . Thank you for your support.

Thank you and other members for your helpful attention.

Adam

I use a Feiyutech 3000mAh battery grip with my OP. It has a usb socket and I use a short usb c cable to connect the two.

adamw Posted at 2-18 04:23
Thank you very much. I hesitate about security check in the airport.

It uses any USB charger.. no more of a problem at airport security than any other phone charger.

Thank you Luis. Great.

adamw Posted at 2-18 04:23
Thank you very much. I hesitate about security check in the airport.

...............and the issue with airport security is?