Thinkpad T480S not taking charge

iLikeRamen · Yesterday 21:53:23

Context: Thinkpad T480s bought off amazon referbished just over a year ago.

My ThinkPad was plugged into my external USB-C hub , that's what i use for HDMI out and charging. I unplugged and it died. Turns out, Arch reports the battery at 0% and charging, even after an overnight charge, I.E the laptop runs off AC power but the battery refuses charge.

Battery Info gives this:

❯ grep . /sys/class/power_supply/BAT0/*

/sys/class/power_supply/BAT0/alarm:1965000

/sys/class/power_supply/BAT0/capacity:0

/sys/class/power_supply/BAT0/capacity_level:Critical

/sys/class/power_supply/BAT0/charge_behaviour:[auto] inhibit-charge force-discharge

/sys/class/power_supply/BAT0/charge_control_end_threshold:100

/sys/class/power_supply/BAT0/charge_control_start_threshold:0

/sys/class/power_supply/BAT0/charge_start_threshold:0

/sys/class/power_supply/BAT0/charge_stop_threshold:100

/sys/class/power_supply/BAT0/cycle_count:518

grep: /sys/class/power_supply/BAT0/device: Is a directory

/sys/class/power_supply/BAT0/energy_full:39300000

/sys/class/power_supply/BAT0/energy_full_design:57020000

/sys/class/power_supply/BAT0/energy_now:0

grep: /sys/class/power_supply/BAT0/extensions: Is a directory

grep: /sys/class/power_supply/BAT0/hwmon2: Is a directory

/sys/class/power_supply/BAT0/manufacturer:SMP

/sys/class/power_supply/BAT0/model_name:01AV480

grep: /sys/class/power_supply/BAT0/power: Is a directory

/sys/class/power_supply/BAT0/power_now:0

/sys/class/power_supply/BAT0/present:1

/sys/class/power_supply/BAT0/serial_number: 4022

/sys/class/power_supply/BAT0/status:Charging

grep: /sys/class/power_supply/BAT0/subsystem: Is a directory

/sys/class/power_supply/BAT0/technology:Li-poly

/sys/class/power_supply/BAT0/type:Battery

/sys/class/power_supply/BAT0/uevent:DEVTYPE=power_supply

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_NAME=BAT0

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_TYPE=Battery

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_STATUS=Charging

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_PRESENT=1

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_TECHNOLOGY=Li-poly

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CYCLE_COUNT=518

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11520000

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_NOW=12549000

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_POWER_NOW=0

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_FULL_DESIGN=57020000

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_FULL=39300000

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_ENERGY_NOW=0

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY=0

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY_LEVEL=Critical

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_TYPE=Battery

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MODEL_NAME=01AV480

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MANUFACTURER=SMP

/sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_SERIAL_NUMBER= 4022

/sys/class/power_supply/BAT0/voltage_min_design:11520000

/sys/class/power_supply/BAT0/voltage_now:12549000

Yes, I need the laptop to be portable, yes I've removed the battery, held the power button for 30 seconds then put it back in, no i'd prefer not to buy a new battery bc they're only just cheaper than how much i got the laptop for. No I don't have access to a Windows install.

Also for some reason the motherboard coin battery is missing, I guess it came without it. Not amazing

Sorry if the wording isn't amazing/sounds rude, I'm very stressed.

Hope i can get some help

Last edited by iLikeRamen (Today 07:23:17)

seth · Yesterday 22:41:04

external USB-C hub , that's what i use for HDMI out and charging

Do you have another charger?

killertofus · Yesterday 23:23:36

Please use [code][/code] tags. Edit your post in this regard.

Trilby · Today 00:31:34

Following from seth's comment, do you have the power specs of the usb hub? Many hubs have plenty of power to charge phones and other small electronics, but cannot provide the 20V (or the 20V at needed current levels) to charge a laptop.

iLikeRamen · Today 07:22:07

Ive also tried with a macbook charger and both chargers directly into both the thinkpad's ports

dimich · Today 07:39:36

iLikeRamen wrote:

Ive also tried with a macbook charger and both chargers directly into both the thinkpad's ports

It's hard to answer your question without analyzing what does laptop request over PD and what adapters answer. And compare to PD handshake with original adapter.
Some laptops may continue to work with random AC adapter but won't charge it's battery unless specific conditions met.
Do you see any warnings in BIOS or during boot while adapter is plugged before OS loaded?

seth · Today 08:31:27

bought off amazon refurbished just over a year ago

Battery did charge w/ the current setup before?
How long since it ran on battery the last time before?
Does it charge when powered off?

axt · Today 12:42:57

Most ThinkPad and Yoga models have a tiny hole on the bottom, with a button underneath it. This is called Emergency Reset Hole.

Using a SIM card tool or a bent paperclip, you need to press and hold it for about 5 seconds. This cuts off the power. Then reconnect the power adapter. The battery should start charging.

Arch Linux

#1 Yesterday 21:53:23

Thinkpad T480S not taking charge

#2 Yesterday 22:41:04

Re: Thinkpad T480S not taking charge

#3 Yesterday 23:23:36

Re: Thinkpad T480S not taking charge

#4 Today 00:31:34

Re: Thinkpad T480S not taking charge

#5 Today 07:22:07

Re: Thinkpad T480S not taking charge

#6 Today 07:39:36

Re: Thinkpad T480S not taking charge

#7 Today 08:31:27

Re: Thinkpad T480S not taking charge

#8 Today 12:42:57

Re: Thinkpad T480S not taking charge

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