Yes I used to waterproof ESCs and servos with plastidip or corrosionX. I found the latter to be super effective; I'm wondering if you could fill the battery compartment with it and pour it out to achieve the waterproof coating it creates. With car LiPos though the batteries were never an issue so I don't know how this would affect the OW battery.
Best posts made by magicrobots
RE: Hydrophobic Treatment? 🌬🌊
RE: Battery diagnostics gone with new app upgrade
Yeah this is huge for me. Observing the balance of the cells in my battery is a great way to monitor battery health. Losing this ability makes me feel less able to care for my hardware. Maybe it's placebo but I really miss it. Please bring it back!