Some of the newer inverters have a USB receptacle for easier charging capabilities. Microwave use on an inverter involves a more complex arrangement than most folks want to endure. You would have to pay more capitalization $$$ for ease of use involving the microwave. In any event, placing the inverter close to the battery/s is very important. There are some significant DC draws from the batteries when using AC devices that draw higher watts. Those devices would be microwave ovens, hair dryers, toasters, coffee makers, and heaters.