Smart UPS 750, all battery lights flashing, I've tried everything.

[Anonymous user]

Hello,

I'm the proud owner of a Smart UPS 750. A couple of weeks ago I had to change both batteries. Somehow though, the UPS still gives me the flashing lights, even after performing calibrations, self tests, cold starts etc.

Fact is, the runtime I get is actually ok, well above 2 minutes, so I was wondering what to do to get rid of the annoying issue.

[BillP · Accepted solution]

Hi Sacha,

You mentioned you performed calibration - was it a software initiated calibration, or a manual one? Usually a manual calibration would resolve the flashing LEDs on the battery bar graph. The steps for the manual calibration are available in this FAQ, it's important to allow the UPS to run on battery until discharged and it turns off.