My vintage 750va non-ups inverter died yesterday. Want to buy a Home UPS 750-900va which can run on a Single battery (have exide invasafe). Important: The Inverter should also work as UPS so that the PC doesnt shut off during powercut, the switchover should be fast enough. I don't want to buy a separate UPS for PC. If anyone is using / has experience regarding the same, kindly suggest a model/manufacturer.