FeaturesAutomatic or Manual: AutomaticProduct Type: Battery ChargerVoltage: 12 voltsAmperage: 6 ampsBattery Test Function: YesReverse Polarity Protection: YesNumber of Batteries Charged at Once: 1Automatic Delay Shutoff: YesAccessory Outlets: YesHandheld or Wheels: Handheld2-6A10A boost50A engine startThermal runaway protectionMulti-stage charging algorithmPatented aluminum transformerInstant engine startNew cord management allows AC plug to be used without removing the cordSmart Technology, the battery charger meets California energy commission guidelines