Goal Zero 23000 Yeti 400 Solar Generator features built-in AC inverters to power lights, CPAP machines, TVs and other such appliances and devices. 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, and users can get another Goal Zero Yeti 400 as they are chainable together for longer use. it is equipped with a 1.5 ampere USB outlet, and a 12 volts outlet.