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Applying a conformal coating to cell modules

Has anyone applied conformal coating to the cell modules to help with moisture resistance?
I was wondering if the resistor array presents any issues to conformal coating, like decreasing heat dissipation.
I will be installing my batteries in the engine compartment of my boat. There is a risk of high moisture or even water drips.

I’m not sure anyone has tried - perhaps try a module and see how it performs? Its also possible to add a small heatsink to the resistors (with an insulating pad underneath) this could be added after the coating.