I am using this inverter from last one year but I dont face any type of problems such as any type of faults, decreasing durability so I can say this is best product among all other brands because I lives in village so here every time power fluctuating but this inverter control the power and this inverter charged quackly to battery in less then 3 hr. So this one thing is bigg deal because in villages power stay very short period. If I talk about price then this inverter cost is high compare then other inverter but believe me its power backup and quality is very high so I suggest u, you can buy this product.