Feature: 1. APPLICABLE CARS: The 10W 12V solar charger panel is suitable for charging 12V battery of cars, motorcycles, boats, snowmobiles, tractors, etc. 2. BLOCKING DIODE: Built in blocking diode to prevent reverse discharge, environment friendly and energy saving, greatly extending battery life. 3. OUTDOOR USE: Charge 12V rechargeable battery in case of emergency, applicable to vehicles working outdoors, traveling or camping training. 4. HIGH EFFICIENCY: The solar panel is made of monocrystalline silicon, with high conversion efficiency, good reliability, convenient and practical. 5. OTHER ACCESSORIES: Equipped with solar battery charger, cigarette lighter adapter, battery clip and 4pcs suction cups, easy to install and use. Specification: Item Type: Solar Panel Kit Solar Panel Size: Approx. 21 x 21cm / 8.3 x 8.3in Power: 10W solar panel (no power storage function) Output Voltage: 12V Weight: Approx. 275g / 9.7oz Material: Monocrystalline Silicon Application: For cars, motorcycles, boats, snowmobiles and tractors 12V battery trickle charging. Package List: 1 x Solar Panel4 x Suction Cups1 x Cigarette Lighter1 x Clip1 x User Manual Note: The product does not have power storage function.The cigarette holder option works only when the key is not ignited and the cigarette holder option has a constant power supply. When you start the car, please remove the solar panel from the car battery.