descent
Contributor
... "what if" i get a leak ... ?
Ah, yes.
The fabric itself is washable, but it might lose resistance if soaked in sea water, creating a short. The battery pack could get hot enough to melt. A big can could even explode.
The tape would probably stay dry nicely if it was sandwiched between two sheets of thin vacuum-sealed polyurethane.
Still, this would require some careful testing. The batteries store a lot of energy. Someone could get hurt.
The Thermalution product and its service/support are starting to sound like a pretty good deal.