A power inverter is an electronic device that converts direct current (DC) electricity, which is typically generated by a battery, into alternating current (AC) electricity that household appliances and devices can use. Inverters are used in a variety of applications, including in vehicles to power devices while on the go, in off-grid or backup power systems to provide electricity during power outages.

There are several types of power inverters available, including pure sine wave inverters, modified sine wave inverters, and multilevel inverters. Pure sine wave inverters produce AC electricity that is very similar to the AC electricity supplied by the grid, making them suitable for use with sensitive electronics and appliances. Modified sine wave inverters produce AC electricity that is somewhat different from grid-supplied electricity, and may not be suitable for use with certain types of equipment. Multilevel inverters are a type of power inverter that use multiple levels of DC-AC conversion to produce high-quality AC electricity.

Power inverters are rated by their output power in watts or VA, and it is important to choose an inverter that is capable of handling the load of the devices you want to power. Inverters also have an efficiency rating, which refers to the percentage of the input power that is converted to usable output power. Inverters with higher efficiency ratings are generally more cost-effective and produce less waste heat.