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#1 2023-09-28 04:45:56
- Trvzn
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- Registered: 2023-07-19
- Posts: 16
[SOLVED] Battery not charging
The battery on my thinkpad Z16 doesn't charge. I use tint2 as my panel and its notification system accuses when the AC is plugged/unplugged, but the percentage doesn't change.
I tried to diagnose it myself, and I get the following (all with AC plugged)
$ tpacpi-bat -g ST
<bat> missing or incorrect
$ cat /sys/class/power_supply/BAT0/status
Not charging
$ upower -i /org/freedesktop/UPower/battery_BAT0
native-path: (null)
power supply: no
updated: Wed 31 Dec 1969 04:00:00 PM PST (1695875325 seconds ago)
has history: no
has statistics: no
unknown
warning-level: unknown
battery-level: unknown
percentage: 0% (should be ignored)
icon-name: '(null)'The cat command returns Discharging if unplugged.
Last edited by Trvzn (2023-09-28 17:53:50)
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#2 2023-09-28 07:32:06
- espritlibre
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- Registered: 2022-12-15
- Posts: 129
Re: [SOLVED] Battery not charging
is tpacpi even needed for your system? if this is recent thinkpad model then battery should be handled by in-kernel thinkpad_acpi module.
seen this thread
battery not charging issues on lenovos are often solved by simply running the Battery Quick Check in UEFI Diagnostics, this will reset the values in the EC
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#3 2023-09-28 15:57:14
- Trvzn
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- Registered: 2023-07-19
- Posts: 16
Re: [SOLVED] Battery not charging
Thanks for the reply.
I only installed tpacpi to run this diagnostics.
I checked the thread and ran
sudo tlp-stat -b
--- TLP 1.6.1 --------------------------------------------
+++ Battery Care
Plugin: thinkpad
Supported features: charge thresholds, recalibration
Driver usage:
* natacpi (thinkpad_acpi) = active (charge thresholds, recalibration)
* tpacpi-bat (acpi_call) = inactive (superseded by natacpi)
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 = SMP
/sys/class/power_supply/BAT0/model_name = 5B10W51887
/sys/class/power_supply/BAT0/cycle_count = 2
/sys/class/power_supply/BAT0/energy_full_design = 72010 [mWh]
/sys/class/power_supply/BAT0/energy_full = 74560 [mWh]
/sys/class/power_supply/BAT0/energy_now = 70890 [mWh]
/sys/class/power_supply/BAT0/power_now = 0 [mW]
/sys/class/power_supply/BAT0/status = Not charging
/sys/class/power_supply/BAT0/charge_control_start_threshold = 0 [%]
/sys/class/power_supply/BAT0/charge_control_end_threshold = 100 [%]
/sys/class/power_supply/BAT0/charge_behaviour = [auto] inhibit-charge force-discharge
Charge = 95.1 [%]
Capacity = 103.5 [%]and
sudo acpi -V
Battery 0: Not charging, 95%
Battery 0: design capacity 4131 mAh, last full capacity 4277 mAh = 100%
Adapter 0: on-line
Thermal 0: ok, 20.0 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 110.0 degrees C
Cooling 0: Processor 0 of 3
Cooling 1: Processor 0 of 3
Cooling 2: Processor 0 of 3
Cooling 3: ath11k_thermal 0 of 100
Cooling 4: Processor 0 of 3
Cooling 5: Processor 0 of 3
Cooling 6: Processor 0 of 3
Cooling 7: Fan 1 of 1
Cooling 8: Processor 0 of 3
Cooling 9: Processor 0 of 3
Cooling 10: Processor 0 of 3
Cooling 11: Processor 0 of 3
Cooling 12: Processor 0 of 3
Cooling 13: Processor 0 of 3
Cooling 14: Processor 0 of 3
Cooling 15: Processor 0 of 3
Cooling 16: Processor 0 of 3
Cooling 17: Processor 0 of 3The most interesting to me was
cat /sys/class/power_supply/BAT0/charge_start_threshold
0
cat /sys/class/power_supply/BAT0/charge_stop_threshold
100Does that mean it only starts charging when it hits 0?
Last edited by Trvzn (2023-09-28 15:58:08)
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#4 2023-09-28 16:37:18
- seth
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- Registered: 2012-09-03
- Posts: 51,675
Re: [SOLVED] Battery not charging
Does that mean it only starts charging when it hits 0?
START_CHARGE_THRESH_BAT0/1: 0(off)..96(default)..99Battery 0: Not charging, 95%You could try to set it to a lower (but explicit) value, allow the battery to drop and see whether it starts charging.
(nb tat you're currently at 98.44% of the design capacity, it the charge doesn't start below 96% that might be the relevant factor over the 95% of 103% capacity)
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#5 2023-09-28 17:53:34
- Trvzn
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- Registered: 2023-07-19
- Posts: 16
Re: [SOLVED] Battery not charging
That seems to have solved the issue (and switching back to the default limit now magically works as well, so go figure...). Marking as solved. Thanks!
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#6 2024-02-29 14:04:34
- LohseBoi
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- Registered: 2021-01-29
- Posts: 2
Re: [SOLVED] Battery not charging
Hey, just tapping in here to get some help. I am having the same issue, but I can't update `START_CHARGE_THRESH_BAT0/1`, how did you fix your issue? I have tried updating the values in /sys/class/power_supply/BAT0/charge_start_threshold and /sys/class/power_supply/BAT0/charge_end_threshold, which did not help. When spamming `tlo-strat --battery` I can see it go from "Not charging" to "Charging" and back, I am wondering if this si a hardware issue (ThinkPad E14 Gen 4, <1 year old)
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#7 2024-02-29 15:17:23
- seth
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- Registered: 2012-09-03
- Posts: 51,675
Re: [SOLVED] Battery not charging
What are the actual values on your system?
The idea was to force the batttery to stop charging below the currently stuck value, drain it and then (hopefully) charge it.
For the OP the battery seems to have re-evaluated its condition and they can now charge to 100% again (which, sidenote, is not advisable if you care about battery life - you want flat cycles between 20% and 80% of the capacity)
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#8 2024-03-01 15:51:46
- LohseBoi
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- Registered: 2021-01-29
- Posts: 2
Re: [SOLVED] Battery not charging
After some further investigation, I believe it's a hardware issue. It does charge, even when powered down, but very slow (around 5% in 1.5 hours), I have tried fixing the threshold-values as in this thread and others, but to no fix.
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#9 2024-03-01 16:03:03
- seth
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- Registered: 2012-09-03
- Posts: 51,675
Re: [SOLVED] Battery not charging
Do you have a different charger?
Does it charge (much) faster when the system is powered down?
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