Better Waterproofing protection for Doorbell Pro

Can you find a way to fully waterproof/condensate-proof the WebCam Doorbell Pro?
I really liked it but after about a year and a half, it stopped working.
Support pointed out that I was out of warranty, so I took it apart and discovered water inside the housing. Further investigation showed that the skinny circuit board traversing the battery pack had likely shorted out due to moisture. Individual cells were still charged, but moisture had damaged things to the point where no voltage made it to the connector (I tested it).
Better waterproofing or (as mentioned in another wishlist) a replaceable battery pack, might solve this issue.

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