Sunforce 58104 3.5 Watt 12 Volt Solar Battery Trickle Charger with OBD-II Connector Includes new patented technology, On-board diagnostic connector (OBD-II) Trickle charges 12 Volt batteries anywhere, anytime! 3.5 Watt amorphous solar panel operates in all lighting conditions, even on cloudy or rainy days Features a new patented technology - On-Board Diagnostics Connector (OBD-II Connector) - Allows the solar panel to connect to the on-board diagnostics port in most modern vehicles (cars, SUVs and trucks) for quick, safe, and convenient battery charging Also includes alligator battery clamps, 12V DC plug for quick and easy connections to your vehicle's 12 Volt battery Suction cups are included to easily mount the solar panel onto the windshield of a vehicle Fully weatherproof design. Built-in overcharge/discharge protection