I bought this 300W inverter to use since Hurricane Maria has left most of Puerto Ricans without electrical power. I can use this inverter in the car lighter or with a battery. This inverter can be used to convert and operate all appliances not greater than 300W. for example: it works very well with laptops, nebulizers and small fans. It has two USB ports and two AC outlets. It is very well built, looks strong, durable, compact and lightweight. I recommend this Power inverter to have in every home since we never know when we will need one.