Keep your batteries juiced up and ready for action with this Competition Solar 7W Solar Panel Battery Charger. Amorphous thin film solar panel technology maintains high performance even in cloudy, hazy and indirect lighta |so a cloudy day will never leave you without power. Simple to install, requires virtually no maintenance. Just hook it up to your battery and let it do its work. Amorphous thin film solar technology works even in cloudy, hazy and indirect light Rated for up to 7W / 460 mA per hour of sunlight Heavy-duty aluminum frame for durability and weather resistance Built-in blocking diode prevents power loss at night Gator clamps for easy attachment to battery Wire leads are 6 ft. long