Grind Hard Plumbing did an offroad Tesla mod where their BEV expert suggested part of the problem was waterproofing everything completely, rather than allowing drain holes in the bottom. Tesla seems to think absolutely sealed batteries are the solution, but water will get in like you say, then it’s trapped.
They had an issue with the motherboard grtting water damaged for the same reason. As long as the car is right-way-up, drain holes won’t allow much water in during immersion, but they will let it back out.
Grind Hard Plumbing did an offroad Tesla mod where their BEV expert suggested part of the problem was waterproofing everything completely, rather than allowing drain holes in the bottom. Tesla seems to think absolutely sealed batteries are the solution, but water will get in like you say, then it’s trapped.
They had an issue with the motherboard grtting water damaged for the same reason. As long as the car is right-way-up, drain holes won’t allow much water in during immersion, but they will let it back out.