Charges 12-volt batteries and creates 4.5 watts of energy�� * Works with automobile， motorcycle， tractor， boat batteries and more * Made of durable ABS plastic and unit crystal solar cell�� * For indoor use--solar panel is not waterproof�� * Built-in blocking diode to prevent reverse discharge�� * Voltage:DC12V/200mA�� * Power:4.5 watt�� * Product Dimensions:13 x4.7 inches�� * Weight:800g�� PS:This solar panel can generate 1 Amp per hour under ideal conditions. For example， under ideal conditions， the panel will generate 4.5 Watts x 7 hours x 7 days per week for a total of 220 Watts of power.�� package including: �� 1x 4.5-Watt 12V Solar Car Battery Charger�� 1x Cigarette adapter with cord�� 1x Alligator clip adapter with cord 2x Sustion Cups Detail:The 4.5-Watt 12V Solar Car Battery Charger is the perfect solution for charging the batteries of motorcycles， automobiles， snowmobiles， tractors and more. Made of durable ABS plastic and amorphous solar cells，