TLP Charge Threshold Configuration on Lenovo IdeaPad

[conferza]

Kubuntu 23.04
Lenovo IdeaPad (not ThinkPad) 3 15ALC6

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Hey, I'm trying to configure TLP to start charging when the battery reaches 50% and stop when it reaches 80%. I just want to make sure I'm doing everything correctly. Here's the comment in the tlp.conf file:

# Battery Care -- Charge thresholds
# Charging starts when the charge level is below the START_CHARGE_THRESH value
# when the charger is connected. It stops when the STOP_CHARGE_THRESH value is
# reached.
# Required hardware: Lenovo ThinkPads and select other laptop brands are driven
# via specific plugins, the actual support status is shown by tlp-stat -b.
# For more explanations and vendor specific details refer to
# https://linrunner.de/tlp/settings/battery.html
# Notes:
# - ThinkPads may require external kernel module(s), refer to the output of
# tlp-stat -b
# - Vendor specific parameter value ranges are shown by tlp-stat -b
# - If your hardware supports a start *and* a stop threshold, you must
# specify both, otherwise TLP will refuse to apply the single threshold
# - If your hardware supports only a stop threshold, set the start value to 0​

The thing is, it's not very clear for me whether my device supports "a start *and* a stop threshold."

Here's the output of tlp-stat -b:

--- TLP 1.5.0 --------------------------------------------

+++ Battery Care
Plugin: lenovo
Supported features: charge threshold
Driver usage:
* vendor (ideapad_laptop) = active (charge threshold)
Parameter value range:
* STOP_CHARGE_THRESH_BAT0: 0(off), 1(on) -- battery conservation mode

/sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode = 0 (100%)

+++ Battery Status: BAT0
/sys/class/power_supply/BAT0/manufacturer = SMP
/sys/class/power_supply/BAT0/model_name = L20M3PF0
/sys/class/power_supply/BAT0/cycle_count = 299
/sys/class/power_supply/BAT0/energy_full_design = 45000 [mWh]
/sys/class/power_supply/BAT0/energy_full = 43810 [mWh]
/sys/class/power_supply/BAT0/energy_now = 25460 [mWh]
/sys/class/power_supply/BAT0/power_now = 4556 [mW]
/sys/class/power_supply/BAT0/status = Discharging

Charge = 58.1 [%]
Capacity = 97.4 [%]​