I purchased new batteries and installed them, but the red replace battery light is still on. Whats wrong?
A. Most likely the UPS simply needs to be recalibrated. The Smart-UPS units have a microprocessor that keeps track of how long the batteries actually provided power the last time the unit ran on batteries. The runtime estimate provided by PowerChute and the battery light bars on the front of the unit are based on that number. The unit is not aware that new batteries have been installed, so a recalibration is necessary. Often times, simply pressing the test button is enough to clear the bad battery light, however the runtime reported by PowerChute will still be inaccurate. To correct this, it is necessary to do a battery runtime calibration from PowerChute or to do one manually.
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