I was cutting the casing off my lipo to resolder a balance wire and when cutting the casing off I caught the silver exterior of one of the cells. The slice is 2mm long. And just the surface. I had the sharp part of the exacto knife facing outward. Not cutting toward the battery. So Im pretty sure the tip barely caught the casing. My question is. Is this repairable? There's no sweet smell or swelling at all. The battery is like brand new.