The Goal Zero 22004 Yeti 150 Watt Solar Generator has enough power to keep your laptops, lights and smartphones working at any time due to its built-in AC inverter. It features a convenient pop-up handle and has an easy to store stackable shape that makes it easy to carry around with you. It can very quickly be refueled using a wall charger, car charger or even a solar charger, but car and solar charger need to be bought separately.