BOPOH
Explorer
Oh. I totally understand what he was saying. And I agree. If the battery came loose and touched the tie-down, it would short. But the same holds true for every other battery tray on the market, including the factory one. The point is, keep your tie-down tight. In light of this concern however, I will be brainstorming an option for greater insurance. It may be as simple as some tubing around the tie-down or maybe just some locking nuts on the tie-down.
No bashing your design, but I think most people are talking about wrench dropping or slipping and being so close to the bracket can cause issues - just pure accident. I've had that happen to me on my BMW - wrench slipped out of my hand got welded to bracket. I think easier solution without sacrifice of design is some kind of powder coating or non-conductive paint if that's possible.