the charger I bought late February directly from Amazon. It has once charged the battery of my BMW and the last six months two. Today I wanted this battery charge for a third time. After about one hour, the battery charger was made. It no longer works. Thereupon, I saw in "my orders" according to file an application for guarantee. Unfortunately, this is no longer possible because Amazon only 90 days is possible to guarantee. I myself am an electronics and guarantee there are probably not more, so I unscrewed the device just on. What I saw there defies description. Charred SMD components, bumbling attempts at repair, solder Gekleckse, .... (As can better solder my twelve year old son!). My opinion: electronic waste, bungling repaired B-goods sold at factory price. I will from now think again more negative reviews and buy electronic bone from other dealers as Reichelt, Conrad, Völkner, redconn, Alternate. Who better Gewährleitstungs- and warranty conditions.