$ sudo tlp-stat -s -b
--- TLP 1.3.1 --------------------------------------------

+++ System Info
System         = ASUSTeK COMPUTER INC. 1.0        ZenBook 14 UX410UFR
BIOS           = UX410UFR.201
Kernel         = 5.5.3-arch1-1 #1 SMP PREEMPT Tue, 11 Feb 2020 15:35:41 +0000 x86_64
/proc/cmdline  = BOOT_IMAGE=/vmlinuz-linux root=UUID=805eb372-94c7-4e8c-87b4-54b0414fa84a rw loglevel=3 quiet
Init system    = systemd 
Boot mode      = UEFI

+++ TLP Status
State          = enabled
RDW state      = enabled
Last run       = 09:11:45 PM,   1613 sec(s) ago
Mode           = AC
Power source   = AC

Notice: systemd-rfkill.service is not masked -- invoke "systemctl mask systemd-rfkill.service" to correct this!
Notice: systemd-rfkill.socket is not masked -- invoke "systemctl mask systemd-rfkill.socket" to correct this!

+++ Battery Features: Charge Thresholds and Recalibrate
natacpi    = inactive (laptop not supported)
tpacpi-bat = inactive (laptop not supported)
tp-smapi   = inactive (laptop not supported)

+++ Battery Status: BAT0
/sys/class/power_supply/BAT0/manufacturer                   = ASUSTeK
/sys/class/power_supply/BAT0/model_name                     = ASUS Battery
/sys/class/power_supply/BAT0/cycle_count                    =     35
/sys/class/power_supply/BAT0/energy_full_design             =  48336 [mWh]
/sys/class/power_supply/BAT0/energy_full                    =  45474 [mWh]
/sys/class/power_supply/BAT0/energy_now                     =  31327 [mWh]
/sys/class/power_supply/BAT0/power_now                      =      0 [mW]
/sys/class/power_supply/BAT0/status                         = Not charging

Charge                                                      =   68.9 [%]
Capacity                                                    =   94.1 [%]

# **NOTE**
# (I manually set the charge_control_end_threshold t0 60)

$ grep '.*' /sys/class/power_supply/BAT?/*
/sys/class/power_supply/BAT0/alarm:4833000
/sys/class/power_supply/BAT0/capacity:68
/sys/class/power_supply/BAT0/capacity_level:Normal
/sys/class/power_supply/BAT0/charge_control_end_threshold:60
/sys/class/power_supply/BAT0/cycle_count:35
/sys/class/power_supply/BAT0/energy_full:45474000
/sys/class/power_supply/BAT0/energy_full_design:48336000
/sys/class/power_supply/BAT0/energy_now:31327000
/sys/class/power_supply/BAT0/manufacturer:ASUSTeK
/sys/class/power_supply/BAT0/model_name:ASUS Battery
/sys/class/power_supply/BAT0/power_now:0
/sys/class/power_supply/BAT0/present:1
/sys/class/power_supply/BAT0/serial_number: 
/sys/class/power_supply/BAT0/status:Not charging
/sys/class/power_supply/BAT0/technology:Li-ion
/sys/class/power_supply/BAT0/type:Battery
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_NAME=BAT0
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_STATUS=Not charging
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_PRESENT=1
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_TECHNOLOGY=Li-ion
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CYCLE_COUNT=35
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11400000
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_NOW=11400000
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_POWER_NOW=0
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_FULL_DESIGN=48336000
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_FULL=45474000
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_NOW=31327000
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY=68
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY_LEVEL=Normal
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MODEL_NAME=ASUS Battery
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MANUFACTURER=ASUSTeK
/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_SERIAL_NUMBER= 
/sys/class/power_supply/BAT0/voltage_min_design:11400000
/sys/class/power_supply/BAT0/voltage_now:11400000

$ udevadm test /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:01/PNP0C0A:03/power_supply/BAT0
This program is for debugging only, it does not run any program
specified by a RUN key. It may show incorrect results, because
some values may be different, or not available at a simulation run.

Load module index
Parsed configuration file /usr/lib/systemd/network/99-default.link
Created link configuration context.
Reading rules file: /usr/lib/udev/rules.d/01-md-raid-creating.rules
Reading rules file: /usr/lib/udev/rules.d/10-dm.rules
Reading rules file: /usr/lib/udev/rules.d/11-dm-lvm.rules
Reading rules file: /usr/lib/udev/rules.d/13-dm-disk.rules
Reading rules file: /usr/lib/udev/rules.d/39-usbmuxd.rules
Reading rules file: /usr/lib/udev/rules.d/40-usb-media-players.rules
Reading rules file: /usr/lib/udev/rules.d/50-udev-default.rules
Reading rules file: /usr/lib/udev/rules.d/60-autosuspend-chromiumos.rules
Reading rules file: /usr/lib/udev/rules.d/60-block.rules
Reading rules file: /usr/lib/udev/rules.d/60-cdrom_id.rules
Reading rules file: /usr/lib/udev/rules.d/60-drm.rules
Reading rules file: /usr/lib/udev/rules.d/60-evdev.rules
Reading rules file: /usr/lib/udev/rules.d/60-fido-id.rules
Reading rules file: /usr/lib/udev/rules.d/60-input-id.rules
Reading rules file: /usr/lib/udev/rules.d/60-persistent-alsa.rules
Reading rules file: /usr/lib/udev/rules.d/60-persistent-input.rules
Reading rules file: /usr/lib/udev/rules.d/60-persistent-storage-tape.rules
Reading rules file: /usr/lib/udev/rules.d/60-persistent-storage.rules
Reading rules file: /usr/lib/udev/rules.d/60-persistent-v4l.rules
Reading rules file: /usr/lib/udev/rules.d/60-rfkill.rules
Reading rules file: /usr/lib/udev/rules.d/60-sensor.rules
Reading rules file: /usr/lib/udev/rules.d/60-serial.rules
Reading rules file: /usr/lib/udev/rules.d/61-autosuspend-manual.rules
Reading rules file: /usr/lib/udev/rules.d/63-md-raid-arrays.rules
Reading rules file: /usr/lib/udev/rules.d/64-btrfs-dm.rules
Reading rules file: /usr/lib/udev/rules.d/64-btrfs.rules
Reading rules file: /usr/lib/udev/rules.d/64-md-raid-assembly.rules
Reading rules file: /usr/lib/udev/rules.d/65-libwacom.rules
Reading rules file: /usr/lib/udev/rules.d/69-cd-sensors.rules
Reading rules file: /usr/lib/udev/rules.d/69-dm-lvm-metad.rules
Reading rules file: /usr/lib/udev/rules.d/69-libmtp.rules
Reading rules file: /usr/lib/udev/rules.d/69-md-clustered-confirm-device.rules
Reading rules file: /usr/lib/udev/rules.d/70-infrared.rules
Reading rules file: /usr/lib/udev/rules.d/70-joystick.rules
Reading rules file: /usr/lib/udev/rules.d/70-mouse.rules
Reading rules file: /usr/lib/udev/rules.d/70-power-switch.rules
Reading rules file: /usr/lib/udev/rules.d/70-touchpad.rules
Reading rules file: /usr/lib/udev/rules.d/70-uaccess.rules
Reading rules file: /usr/lib/udev/rules.d/71-seat.rules
Reading rules file: /usr/lib/udev/rules.d/73-seat-late.rules
Reading rules file: /usr/lib/udev/rules.d/75-net-description.rules
Reading rules file: /usr/lib/udev/rules.d/75-probe_mtd.rules
Reading rules file: /usr/lib/udev/rules.d/78-sound-card.rules
Reading rules file: /usr/lib/udev/rules.d/80-drivers.rules
Reading rules file: /usr/lib/udev/rules.d/80-libinput-device-groups.rules
Reading rules file: /usr/lib/udev/rules.d/80-net-setup-link.rules
Reading rules file: /usr/lib/udev/rules.d/80-udisks2.rules
Reading rules file: /usr/lib/udev/rules.d/84-nm-drivers.rules
Reading rules file: /usr/lib/udev/rules.d/85-nm-unmanaged.rules
Reading rules file: /usr/lib/udev/rules.d/85-tlp.rules
Reading rules file: /usr/lib/udev/rules.d/89-alsa-ucm.rules
Reading rules file: /usr/lib/udev/rules.d/90-alsa-restore.rules
Reading rules file: /usr/lib/udev/rules.d/90-backlight.rules
Reading rules file: /usr/lib/udev/rules.d/90-brightnessctl.rules
Reading rules file: /usr/lib/udev/rules.d/90-libinput-fuzz-override.rules
Reading rules file: /usr/lib/udev/rules.d/90-nm-thunderbolt.rules
Reading rules file: /usr/lib/udev/rules.d/90-pulseaudio.rules
Reading rules file: /usr/lib/udev/rules.d/90-vconsole.rules
Reading rules file: /usr/lib/udev/rules.d/95-cd-devices.rules
Reading rules file: /usr/lib/udev/rules.d/95-dm-notify.rules
Reading rules file: /usr/lib/udev/rules.d/95-upower-csr.rules
Reading rules file: /usr/lib/udev/rules.d/95-upower-hid.rules
Reading rules file: /usr/lib/udev/rules.d/95-upower-hidpp.rules
Reading rules file: /usr/lib/udev/rules.d/95-upower-wup.rules
Reading rules file: /usr/lib/udev/rules.d/96-e2scrub.rules
Reading rules file: /usr/lib/udev/rules.d/99-fuse.rules
Reading rules file: /usr/lib/udev/rules.d/99-fuse3.rules
Reading rules file: /usr/lib/udev/rules.d/99-systemd.rules
Reading rules file: /etc/udev/rules.d/99_battery_threshold.rules
BAT0: /etc/udev/rules.d/99_battery_threshold.rules:1 Failed to write ATTR{/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:01/PNP0C0A:03/power_supply/BAT0/charge_control_end_threshold}, ignoring: Permission denied
DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:01/PNP0C0A:03/power_supply/BAT0
POWER_SUPPLY_NAME=BAT0
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_CYCLE_COUNT=35
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11400000
POWER_SUPPLY_VOLTAGE_NOW=11400000
POWER_SUPPLY_POWER_NOW=0
POWER_SUPPLY_ENERGY_FULL_DESIGN=48336000
POWER_SUPPLY_ENERGY_FULL=45349000
POWER_SUPPLY_ENERGY_NOW=35260000
POWER_SUPPLY_CAPACITY=77
POWER_SUPPLY_CAPACITY_LEVEL=Normal
POWER_SUPPLY_MODEL_NAME=ASUS Battery
POWER_SUPPLY_MANUFACTURER=ASUSTeK
POWER_SUPPLY_SERIAL_NUMBER=
ACTION=add
SUBSYSTEM=power_supply
USEC_INITIALIZED=1882376914
Unload module index
Unloaded link configuration context.

$ cat /etc/udev/rules.d/99_battery_threshold.rules
KERNEL=="BAT[0-9]", SUBSYSTEM=="power_supply", ATTR{charge_control_end_threshold}="60"

[Unit]
Description=Persist the battery charging threshold between restarts
After=multi-user.target
StartLimitBurst=0

[Service]
Type=oneshot
Restart=on-failure
ExecStart=/bin/bash -c 'echo %s > /sys/class/power_supply/BAT?/charge_control_end_threshold'

[Install]
WantedBy=multi-user.target