I am using usha zentra inverter since three years in my home their was no bigg issues with this this inverter during this three years recently it gives a trouble, the connecting wire from battery to ups ( unintrepted power supply) was sopiled and it don’t take much time to clear that problem the charging time of this battery took around 10hours and the discharging time during the power cuts was so long if we use a single light and single fan it will come near 12 to 15 hours, maintainance of this inverter is also simple we should check the distlled water in battey once in a month that’s it nothing more than that
It is a nice prouduct with easy controls