Bought two of these 2 years ago. I have used them many times as we have cars that are seldom used and frequently have run down batteries. Instant restart every time. One of the cables died and on contacting Colin I sent him an email with my details to send me an invoice and banking details to get a new one. When reply was not received, I phoned him again and he was so upset that I had not heard from him, he couriered a new cable to me at no charge. Arrived the next morning from Cate Town. Outstanding service!!