Hi friends, I use utl sun pack 1025 pure sine wave Inverter. This Inverter makes many problems. When start the machine after few time it get very heat and suddenly shut down with overloaded sounds. Its battery backup is is very poor. I found Its problems is regularly , Its not a user friendly product. It's design is not good and its not easy to use. Overall this Inverter performance is very poor.my view of point its not a durable product. This Inverter service support is not prompt and reliable for me because they attend the service call after 48 hours.