Bar Graph Area

The PowerChute plus Main Screen displays three bar graphs (except if your UPS is a Back-UPS, for which the Main Screen displays no bar graphs). The middle bar graph display Utility voltage and the right bar graph displays UPS Load data. By default, the left bar graph on the Main Screen displays Battery Capacity data, but you can configure the left bar graph to display other data.

See Monitoring Preferences... for more information on changing the bar graph display.

The following example of the bar graph area shows the default bar graphs.

The three default bar graphs shown in the preceding example are explained in the following table:

Bar Graph
Description
Battery Capacity

The percent of battery capacity remaining. To perform a runtime calibration, battery capacity must be at 100%.
Utility

The utility line voltage, i.e. the AC voltage entering the UPS from an electrical outlet. The graph also shows the High and Low Transfer Points.

The bottom of the upper red area, the High Transfer Point, shows the highest line voltage the UPS will accept without switching to battery power.

The top of the lower red area, the Low Transfer Point, shows the lowest line voltage the UPS will accept without switching to battery power or, with Smart-UPS and Back-UPS Pro models, without activating the SmartBoost brownout correction feature. See High and Low Transfer Points for information on configuring the High and Low Transfer Points.

UPS Load

The load, as a percentage of total capacity, currently placed on the UPS.

The two configurable alternatives to the Battery Capacity bar graph are the Run Time and Battery Volts bar graphs:

Bar Graph
Description
Run Time

The number of minutes the UPS can support the current load when running on battery. The red area is the UPS Low Battery Signal Time and can be configured by the user.
Battery Volts

The UPS battery voltage (VAC). If the bar drops into the lower red zone, the UPS has either a weak battery or a malfunctioning battery charger. If the bar rises into the upper red zone, the UPS has a malfunctioning battery charger.