Dont buy APC Invertor..they don’t have any service. the service person don’t know anything other than checking the battery and take voltage reading. they are not even authorized to open the invertor and are not given any spare parts. so shameful that the company don’t supply any spare parts. If u don’t have AMC, then u can only throw away the invertor as no service is available with AMC. My invertor has just a problem with battery connector which may cost just 100 rs. But I have to just throw it to streets now.