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2 weeks ago
SMT750I red light battery problem
I have a problem with my SMT750I UPS. It still worked for years until displaying the “replace battery” alert. So I ordered and installed new RBC48 batteries. It works well with good autonomy for 10-15 days then it displays red light "connect battery" or "replace battery". I then have to turn it off unplug it then turn it back on so it goes back to green for a few days.
I don't understand where the problem comes from...