BlueAnt Supertooth 3 BlueTooth Heavy Duty Plug-In Car / Vehicle Charger! An outstanding quality charger at a reasonable price up to 1/2 the original price! Official 2 stage accurate and safe charger, ensures a longer lasting battery, always. One year warranty is offered by the manufacturer against defects. The first stage of this charger offers fast charging until 95% bettery life. The second stage of this charger is "trickle" charge and fully optimizes your battery to 100%.