I have a POWERTECH 650 VA UPS (made in china). I bought and started using that UPS on 16/10/2014. Yesterday (19/02/2017) after a main power failure, the UPS turned off within 1-2 seconds and hence I could not save my work in my PC. The UPS could not give backup after subsequent power failures.
Should I get a new battery for the UPS or just buy a new UPS? Which one would be beneficial? How will I know that the UPS will still be functional for a longer time even after the battery has been replaced? I mean will the UPS circuits will still be reliably functional even after the battery has been replaced?
Thanks in advance