If all of a sudden the Battery Charge LED’s on your Smart-UPS started blinking, there could be several things going on.
1. The battery LED’s start blinking once the UPS knows it can’t support the attached load for longer than 2 minutes. This could be because your batteries are aging and at that load, you won’t have more than two minutes of run time. It could also be because you increased the load. Try and take some of the load off and see if the LED’s stop blinking.
2. Reset the Low Battery Signal – For example, take a Smart-UPS 1400 with 15 minutes of run time at the current load, if the low battery signal is set to 9 minutes, then if there’s less than 8 minutes of run time available the LED’s will start blinking. Set the battery signal warning time to a lesser value in the configuration menu and the UPS shutdown parameters sub menu in Powerchute plus.
3. Perform a run time calibration – this will give you accurate run time availability. This will also let you know if it’s time to change your batteries, they might have aged to the point where they can’t provide enough run time, but they haven’t completely expired. Follow the calibration procedure to do a calibration.