I have the Nomad 10. I was able to get one Canon R5 battery charged per day with a little power to spare for a phone charge as well. The power supply highly depends on how much sun you get and we were lucky to have sunny weather every day. You will benefit from having a larger solar panel but it also depends on how much space you will have in your luggage.

@Phelps on the Fly thanks for the info. That's not much charging. I have sourced a 21w foldable panel, but I might have to take two by the sound of it. Luggage should be ok. Im planning to use them during the day to top up power banks that I can use at night to charge my gear. They have a DC output to charge a car battery as well, which we may be able to source locally and get to the island with us. We'll be fine if we get that, hopefully. It's tropical, so hopefully, we get some sunshine. Although it was cloudy all the time, last time I went and 20kt wind. Thanks again for the reply. Appreciate it.