Hello friends today I have share my true experience about this usha zentra home ups was not good it is a size of regulator size and usha home ups I was purchase this usha zentra home ups last 6 months I was not like this usha zentra home ups was not satisfied this ups to give the power backup of light not charge sufficiently this is not user friendly use in all season and not good durability of home ups service and support are not good it is worth in condition and also handy style and design I was not like soo I just recommendedthat you cannot buy this inverter it is simplify waste of money