Voltcraft smp 36 multi voltage usb car charger with interchangeable output plugs voltcraft smp 36 the voltcraft smp 36 usb car charger is also a 3 to 12v small equipment adaptor and is supplied with a range of interchangeable charging tips in popular sizes this small device adaptor is designed specifically for the operation of multimedia devices such as digital cameras mp3 players portable tvs but also smart phones and game consoles etc so you can now run your devices in the car as a