With the Capacity ruler tool, the user can easily measure the capacity charged and/or discharged with reference to a specific chart area.

The Capacity ruler tool is selected through a button located in the toolbar of the chart viewer form.

When selected, the mouse pointer changes to a large cross to mark the region of measurement.


The tool is operated by clicking on the selected point in the chart and dragging the selection to reach the desired point of measurement as described below:


  1. when clicking, a dimension line is established at the original clicked point.


  1. the dimension line will extend following the mouse movement till the button is released; during the mouse movement an indicators pops up to highlight the distance traveled on the x-axis from the original point.


  1. when the ending point is reached, release the mouse.


  1. a small window pops-up at the top-rightmost edge of the chart area, showing the result of the capacity measurement.

The capacity is calculated for the period selected.
If in the selected range of data both charge and discharge currents are found, they are accounted separately.

Pack-level capacity is calculated in mAh (milliAmpere-hour) and Wh (watt-hour)
Cell level capacity is only calculated and Wh (watt-hour) per single cell

The pop-up window is cleared on exiting the Capacity ruler tool.