ThinkPad Battery Calibration

These are just notes for me to revisit if I have battery issues in the future. Got my ThinkPad battery replaced today after ~4 years of great service.

https://linrunner.de/tlp/

tlp recalibrate

Currently discharging battery BAT0:
voltage            =   9915 [mV]
remaining capacity =   3080 [mWh]
remaining percent  =      5 [%]
remaining time     =     14 [min]
power              =  12512 [mW]
state              = Discharging
force-discharge    = 1
Press Ctrl+C to cancel.

Done: battery BAT0 was completely discharged.
Charging starts now, for a complete recalibration
keep AC connected until the battery is fully charged.

tlp-stat -b

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

+++ Battery Care
Plugin: thinkpad
Supported features: charge thresholds, recalibration
Driver usage:
* natacpi (thinkpad_acpi) = active (charge thresholds)
* tpacpi-bat (acpi_call)  = active (recalibration)
Parameter value ranges:
* START_CHARGE_THRESH_BAT0/1:  0(off)..96(default)..99
* STOP_CHARGE_THRESH_BAT0/1:   1..100(default)

+++ ThinkPad Battery Status: BAT0 (Main / Internal)
/sys/class/power_supply/BAT0/manufacturer                   = SANYO
/sys/class/power_supply/BAT0/model_name                     = 01AV463
/sys/class/power_supply/BAT0/cycle_count                    =      1
/sys/class/power_supply/BAT0/energy_full_design             =  45510 [mWh]
/sys/class/power_supply/BAT0/energy_full                    =  52090 [mWh]
/sys/class/power_supply/BAT0/energy_now                     =   6100 [mWh]
/sys/class/power_supply/BAT0/power_now                      =  34004 [mW]
/sys/class/power_supply/BAT0/status                         = Charging

/sys/class/power_supply/BAT0/charge_start_threshold         =     96 [%]
/sys/class/power_supply/BAT0/charge_stop_threshold          =    100 [%]
tpacpi-bat.BAT0.forceDischarge                              =      0

Charge                                                      =   11.7 [%]
Capacity                                                    =    100 [%]

tlp-stat -s

+++ TLP Status
State          = enabled
RDW state      = enabled
Last run       = 09:12:21 PM,    898 sec(s) ago
Mode           = AC
Power source   = AC

/etc/tlp.conf

TLP_ENABLE=1

START_CHARGE_THRESH_BAT0=40
STOP_CHARGE_THRESH_BAT0=50