Portable Solar Panel Power Battery Charger Backup For Car Boat Automobile 12V 5W Specification: 1.The 5-Watt 12V Solar Car Battery Charger is the perfect solution for charging the batteries of motorcycles,automobiles, snowmobiles, tractors and more, which is not only environmental protection and energy saving, but also can maintain the battery lifetime, extending its usage life. 2.It can also charge other 12V rechargeable batteries in emergency,suitable for vehicles in outdoor work or travel or camping training. 3.Made of durable plastic and Mono-crystallinesilicon solar cells, this unit charges in all daylight conditions, even on cloudy days. 4.Constructed with a built-in blocking diode to prevent reverse discharge, this solar panel is easy to install and completely maintenance-free. 5.Just plug this solar charger into your vehicle's 12-volt lighter socket and position the panel to pick up the most daylight possible. 6.Or, if you prefer, use the included alligator clips to connect it directly to the battery. Feature: Material Polysilicon or monocrystal silicon Solar panel Power 12V 4.5W Output Voltage Over 18V DC Size approx 320mmX120mmX6mm Output Current over 250mA Light source in 10000LUX Best working time 9.00 am-5.00pm Works with automobile, motorcycle, tractor, boat batteries and more Built-in blocking diode to prevent reverse discharge Installation: 1. Put it on the work bench in front of the car dashboard, the sunlight absorbing ability of this way is not strong. 2. The sunlight absorbing ability will be great if you set the two elastics at the back of the product on the sun visor of the car. 3. It is better to fix the sucker in the windshield which doesn’t affect the security sunlight exposure easily or other places. Package Included: 1 X Solar Charger 1 X Charge for car wire 1 X Charge for other 12V Rechargeable Wire 2 X PVC3.5cm sucker Note: Be sure to note when using the product is negative and the positive and teh negative charged products must be consistent Rations using the product accessories. If no professionals,please do not go trying to change the product. Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thank you for your understanding!