Bests & Worsts Reviews from Amazon

Failed just after the time limit for returning items to Amazon. The switch to select 6 or 12V is weak and easily moved by accident. The Schumacher SEM-1562A-CA (also sold by Amazon) is the same price, automatically senses whether it's charging a 6 or 12V battery (no switch) and has indicators that are easier to read and give more information. It also claims to have a desulfation mode. I purchased the Schumacher at about the same time and it has been working without fault. I would not purcahse this product again. Depending on cost and resistance encountered, the thing may get returned or trashed. Update 3/25 - Two months after calling on the phone, getting an authorization and sending in the dead unit for a warranty replacement, nothing has arrived. Not only is the product defective, but it seems the company is as well. I will avoid their brand and their holding company and all of its brands as much as possible.