I've only had this item for two days and I already love it. I'll try to remember to update this in about 6 months. I bought this to charge my son's 12v Peg Perego John Deere Gator battery. I've changed two Peg Perego 12v chargers over the course of two years. The Gator was used for about two hours a day which practically killed it. The Peg Perego charger takes over 12 hours to charge. I connected this charger to a completely dead battery and it fully charged in two hours. What a life saver! I love how the lights flash and pulse to let you know the charging progress and how they switch to a companion once the battery is charged. I have several Schumacher products so I knew this brand was trustworthy. I'm so glad I bought this!