DC 12V to 5V 3A 15W Car Power Adapter Charger with Double Weight; USB port cable converter module Features: Automobile; d DC 12V to 5V buck converter. Maximum current 3A 15W. It can quickly charge your phone/DVR/Tablet/GPS/ebook/other devices powered by 5v Direct connection (permanent) with car battery, no need to occupy the cigarette lighter power socket. Built-in over-voltage, under-voltage, overload, overheating and short circuit protection double; USB female ports. Universal for all electronic devices. 3A 15W high power. It can charge its devices quickly. High quality and efficiency. 3 years warranty Car power input 12V, output 5V, current maximum efficiency 3A With double ports; charging. They will be very fast to charge your phone/tablet/GPS tab/car DVR/other 5V powered devices, compare; The conversion rate is 96% or more, low heat. Over voltage, over current, over temperature