Community meeting on 22nd May 2025

  • Name/IRC nick: Fingus
  • Topic: Percentage display of Jolla C2 battery
  • Some details about the topic:
    The battery calibration of the percentage display on the Jolla C2 has a strange mapping/positve shifting. While the system shows 100% battery at “end” of charging, it sometimes continues to charge at 400mA and decreasing for 10-30 minutes until its really “full” - the System recognized that correctly then. When the battery-level falls below 20%, it drops very quickly (only a few minutes remain). The voltage of the battery is then 3.6 volts or lower, which indicates a miscalibration. Here in the forum, there are already some who have also observed and reported this. I do not consider this to be a hardware fault, as the battery voltages are within the permissible parameters. I could imagine it is defined in the device adaptation. Is there a way for you to easily change this mapping? Or its up to Reeder to change it in the Firmware/Driver?
  • Approx. time needed: 5 Minutes

Charging:


Discharging-Drop under 25% and very fast under 20/15% with same load:

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