Go Power! GP-SF-1.5 SUNfilm 1.5 Watt Solar Panel Harness the power of the sun to charge your 12 Volt batteries with 1.5 Watts of charge Completely silent green energy Comes with cigarette lighter adapter for easy installation on your vehicle Trickle charge motorcycles, snowmobiles, cars, ATV's, boats personal watercraft and more Keep your batteries topped up when they are left idle