thank you ashu888ashu888 for ur detailed reply. But one more question, do I keep the ups on if I am not using the pc or switch it off but keep the switch at the main socket on. Also when my room's ac's compressor turn on or off the ups goes into backup mode, simultaneously, and then work normally during the rest period. Any idea why it happens.
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Faith is the boast of a man who is too lazy to investigate.
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