Ring In-Car Charger with Twin USB Port Your phone always seems to run out of battery when you need it most, but now you can recharge it when you're on the move with this 2.5amp In-Car Charger. Simply connect the charger to the cigarette lighter in your car and it will quickly charge up to two devices at once - great for long journeys commuting to work. It's suitable for all new generation tablets, smartphones, mp3 players and iPods.