SIWA1002 Features: * Solar collector * High quality monocrystalline solar cells * Power center 100 charging cable * Barrel power adapter * Weatherproof * Battery clamps * Directly charge a device or store the energy in an accessory storage device * Used to generate energy to power a variety of portable electronic devices * Wattage: 30 Specifications: * 7 Ampere charge controller prevents battery overcharge, over discharge and load protection * Collect 30 watts of energy from large solar panels * Chained together to create 90 watts of power, using the accessory chainable cable Dimensions: * Overall dimensions: 30.5" H x 20.5" W x 2" D Warranty: * Manufacturer provides 1 year warranty on material and workmanship