Best waterproof solar panels

I have ordered the new AC500 and B300S batteries so need more charging power. I did order a couple of the new PV400 but also looking at some other more waterproof panels that can be easily stored as I will obviously need quite a bit of capacity to charge 12KWH of battery and on a watt per cost basis the PV400 are not cheap and not waterproof. I was thinking of something like these Bouge ones. Does anyone have any recommendations on a good solar panel that is easy to store?

Just want to “bump” this question.

I, too, would like to obtain waterproof panels, that are not foldable, and have a warranty period of (a lot) more than 12 months. And, of course, hear of problems experienced, such as not having the correct accessories to connect the panels to the battery.