Bests & Worsts Reviews from Amazon

I bought this unit September of 2017. It failed just outside the return period from Amazon. I connected this unit to jump my car and heard several unusual clicks followed by a very bad smell. The unit was hot and left it alone until it cooled down. Based on all the glowing reviews I'm surprised this unit failed so soon (2 months in on the 12 month warranty). I contacted the manufacturer. They told me to send it back to the retailer instead. I contacted them a second time where I was told to ship it to them with proof of purchase (not a big deal). The manufacturer currently has the defective unit. I'm hoping to get a solid replacement unit like everyone else and at least get my shipping cost back as its under warranty. Not to mention other manufacturers would send a pre paid shipping label for warranty exchanges at no cost to the customer. I'll update this review once I see what the manufacturer does.