Portable power stations & ferry's/channel tunnel?

[jono878]

I'm heading out to Europe in June & I took my ebike last year on the channel tunnel & dfds ferry with no problems . I'm guessing it will be fine to take a portable power station but finding the information on this kind of thing is a problem.

Anyone had an experience with traveling with a campervan?

Will be using a ECOFLOW RIVER 2 Pro 768 Wh Portable Power Station.