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G.W.
Asked: 2022-09-24 05:27:25 +0800 CST

What is difference between 'charge_start_threshold' and 'charge_control_start_threshold'

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When working to configure battery charge threshold behavior, running

ls /sys/class/power_supply/BAT0

produces two pairs of entries that seem to have the same function:

  1. 'charge_start_threshold' and 'charge_control_start_threshold'
  2. 'charge_stop_threshold' and 'charge_control_end_threshold'

What is the appropriate use of each of these? For example, when should 'charge_start_threshold' be used instead of 'charge_control_start_threshold'?

systemd

1 Answers

  1. charge_start_threshold is the legacy API (invented by thinkpad-acpi IIRC) and you can ignore it. You can verify that changes to one of the parameters are automatically reflected in its twin.

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