The battery's junction box in the engine compartment is melting. While I was driving, I heard a loud pop, I opened the hood, and saw smoke coming from the junction box. I noticed the box was melting around a fuse. The melting is significant, and the vehicle looked to be on fire. The smoke stopped, but I feel the vehicle could easily have caught on fire completely. There are recalls for this same exact issue but for other Ford Models. I have a fleet of these vans, and this has now occurred to 6 of them. I know other owners that this occurred to as well. I have called Ford Goodwill and they have declined to cover it under the 3-year, extended warranty. The melting was so bad on one that the actual harness was burnt as well. This is a dangerous issue that Ford already knows this happens. I have receipts for all of these repairs and the technician acknowledging the junction box melting. I have emails from Ford where they apologize for the issue, and they say they cannot cover it under warranty. They refuse to comment on the safety danger this poses on all. This is an amazon delivery van and there are thousands of these that could catch fire in someone's house or business.