Features��Supplement power to all your 12V car batteries and creates 4.5 watts of energy. Mono-crystalline silicon solar panel guarantees its high efficiency. Universal installation in vehicles of 12V， including car， motorcycle， boat， ATV， tractor， boat，etc， so as to extending their batteries�� lifetime. Also charges other 12V rechargeable batteries in emergency， especially for your working， traveling or camping in the wild. Constructed with a built-in blocking diode in its cigarette lighter and clips to prevent reverse discharging. Charges in all daylight conditions， even on cloudy days. Durable， portable and environmental friendly. Specifications:Color: Black Material: Mono-crystalline silicon Production dimensions: 32.3x 12.3cm Power: 4.5W No-load voltage: DC 18-23V Output current: 250mA(ideal condition) Fitments: all car or motorcycle batteries of 12V Package contents:1 x Solar panel car battery charger1 x Cigarette lighter cable 1 x Battery charging clips cable1 x User Manual 2 x Suckers