This 1800 mah (approx 28 watt) solar panel comes with a 12 volt female cigarette lighter adapter and 15' of extension cord with an O-ring to connect to a 12volt battery trolling motors, multiple small electronics or larger sized electronics like 13" TV/VCR combos. The R-28 rollable solar panel will resist damage from pointy devices, stand up to hot, cold and cloudy conditions, waterproof, lightweight and compact. p>