Built with the camping and caravan enthusiast in mind, this product is equally to suit for anyone that frequently tows vehicles requiring battery maintenance to the trailer, caravan battery or power for equipment operation. The 7-pin trailer plug delivers power to operate the standard stop, tail, reverse, indicator and licence plate light, whilst the built in HD battery connector delivers up to 50A of power to the battery to charge, maintain or power equipment like a fridge for long journeys.