The Streamlight SolarStream is a vehicle charger that mounts on top of the patrol car. It delivers a low rate maintenance charge to the car battery during the day. It is a thin silicon, solar panel that helps to counterbalance the car battery drain from the computer system and other electronics when the car is shut off. It is designed to connect directly to the car’s battery. It will supply the vehicle with a 14 watt additional capacity. It produces up to 950 milliamps of current to the battery. It keeps a trickle charge in low sun and also in cloudy conditions. The Streamlight SolarStream, which has an adhesive back panel, is directly connected to the vehicle’s battery. It has been tested for wind resistance up to 120 mph. It minimizes the need to continuously jump start a car. Over time, it will pay for itself by eliminating dead batteries and extending the battery life. It comes with a fuse holder and a fuse that automatically shut off power from the solar panel if the cord gets impaired. Dimensions; Length: 40.88 in. (103.8 cm). Width 13.07 in. (33.2 cm). It weighs 1.3 lbs. (0.6kg). The length of the cord is 20 feet (6 meters).