So the batteries that vented were in your mod when you dropped it in the snow right? What kind of batteries did you have for it? Did they vent inside mod or outside when you charged or something? It could have been from the drop that messed up the chemistry of batteries which led to venting soon after, or you could have messed up something in the mod which led to it performing unsafely. I know myself I would buy another mod unless I was 100% sure the batteries were the main culprit. The mod is only 50$ and that's worth peace of mind to me. Vape safe.