Comix provides all range of DC-to-AC power inverters including Step wave and Sine wave both, also a series of battery chargers. Idea for camping, boating, caravans, mobile office, field work, emergency power and many other uses. Battery chargers are for camcorders, laptop computers, cellular phones & power tools. Over 600W effect in high motor starting surge and can be used for hand tools, small refrigerator and most oxygen concentrators.