What is a power inverter, what is it used for and how does it work are the questions which are answered in detail in this article. The author takes this opportunity to explain also how one should choose a power inverter and what are the important points that one needs to keep in mind about it. Power inverters are used when the electricity is gone as they convert the electric current and this can be used to power as many appliances as the inverter can handle. Read on to know more.