Hi, new member here. I have APC backups 1100 since 2016. I just changed the battery yesterday, I connect it to power inlet, and let it on for 8 hrs. then I turned off the power on the night (without unplug the power). But this morning when I turned on the power again, it suddenly go to off with sound like "cklak" from circuit board (not the reset button on backside) . It always be like that. I test the battery with mutitester, and it still good (12,5V) . any idea?
here the video i record : https://www.youtube.com/watch?v=psapNyZi3So
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