Battery Calibration

This screen shows a summary of battery data and it's calculated capacity based on recorded data.

At the top you can create a battery profile. A profile stores battery information available on that screen, estimates data as well as '% based on mV' option.

The mV reference tracks the largest mV range every recorded. You can update it using 'update reference' button.

The historical mV and % are taken from recorded battery data.


The in-use mAh is the capacity currently used by the app to do its calculations.

The average mAh is determined from recorded data, only from charge cycles.


Each charge cycles considered are listed and may be adjusted (on devices with estimated mA) as described here (you may have to adjust USB or AC power in battery / calibration settings if necessary):

  • The charge rate was higher than the defined USB power

  • The charge rate was higher than the defined AC power

Those errors are measured against AC/USB power capabilities (as defined in battery / calibration settings), only on devices with estimated mA. Either the power capabilities are incorrectly configured or the actual (in-use) battery capacity is overrated.


Read more here: How does calibration works?


For information on how to prolong your battery life, here is an interesting Wiki (see battery life chapter). 

The important points are those 2:

-Keep battery cool, and avoid charging past 70% while using the device and creating over-heating.

-You can discharge your battery fully (voltage going down to 3200mV) it won't hurt as 3200mV actual means 40% of battery capacity is left, which is the safe threshold mentioned in the Wiki above!


Additional options are available pressing the menu button:

  • Clear history
  • Clear battery statistics (need root)
  • Clear estimates
  • Edit markers/Show history switch



Not enough information? Please suggest improved/new/updated content e-mailing me the current URL and content you need to get improved/updated.