A:AnswerAs long as the battery is fully charged, you don't need it hooked up to anything. It seems a full battery charge will last about 3 hours, then my kids need to use the car charger if they want to keep using them.
A:AnswerI’m not all that savory with connecting devices to other devices, but I don’t think it has that capability. It can function by battery or AV plug-in cord. A battery charger comes with DVD player.