This high-capacity renewable dehumidifier has been designed to absorb moisture from small enclosed areas. It will help protect clothes and valuables from the damaging effects of mold, mildew and moisture rot. It is 100 percent renewable and needs no power to operate. Just hang the Eva-Dry unit in a closet or place it in other small enclosed spaces and it will adsorb moisture. There are no batteries required or cords to plug in – the unit works without power.