I have purchased this Microtek inverter and I am using this inverter for one year. This inverter is not so useful this inverter takes many time to get complete charge as compared to the other inverter available in the market. And after complete charging this inverter does not last long. It gets dead very fast which is a greatest drawback of this inverter. That why I got many problem in the summer season because in summer season there is cut of electricity every 3 hours. So inverter is the only way to protect ourselves from summer but due to this bad inverter I am very disappointed.