Use for back-up, camping, tailgating, light duty construction, emergencies * Power lights, tools, refrigerators, freezers and health care equipment * Silent and safe, no noise or fumes * Safe to operate indoors; no cords coming from outside * Includes two Boulder 30 solar panel which charges Yeti 1250 in 24 hours from sun; durable panels, tempered glass and aluminum frame; chain additional boulder 30s together to decrease recharge time * Voltage that would work for this product is only 110V.