Arch Linux

Schmidi

Member

Registered: 2016-08-01

Posts: 2

Laptop charging device is getting hot with fully charged battery

Hello

I am relatively new to Arch. I have been using Manjaro Linux and other distributions.
But I wanted to get a better understanding of Linux due to that I am giving Arch a shot.

My Laptop charging device is getting hot although the battery is fully charged.
I know that the charging device can get hot during charging, but the battery is already charged. And the charging device does not even get this hot while really charging an empty battery.

I have never encountered this problem while using other distributions!

inxi -F

System:    Host: linux-hp Kernel: 4.6.4-1-ARCH x86_64 (64 bit) Desktop: KDE Plasma 5.7.2 Distro: Arch Linux
Machine:   System: Hewlett-Packard (portable) product: HP ZBook 15 v: A3009DD10303
           Mobo: Hewlett-Packard model: 1909 v: KBC Version 94.53
           Bios: Hewlett-Packard v: L70 Ver. 01.21 date: 08/13/2014
Battery    BAT0: charge: 42.9 Wh 100.0% condition: 42.9/42.9 Wh (100%)
CPU:       Quad core Intel Core i7-4700MQ (-HT-MCP-) cache: 6144 KB 
           clock speeds: max: 3400 MHz 1: 2407 MHz 2: 2398 MHz 3: 2401 MHz 4: 2395 MHz 5: 2400 MHz 6: 2401 MHz
           7: 2394 MHz 8: 2401 MHz
Graphics:  Card-1: Intel 4th Gen Core Processor Integrated Graphics Controller
           Card-2: NVIDIA GK106GLM [Quadro K2100M]
           Display Server: X.Org 1.18.4 driver: intel Resolution: 1920x1080@60.01hz
           GLX Renderer: Mesa DRI Intel Haswell Mobile GLX Version: 3.0 Mesa 12.0.1
Audio:     Card-1 Intel 8 Series/C220 Series High Definition Audio Controller driver: snd_hda_intel
           Card-2 NVIDIA GK106 HDMI Audio Controller driver: snd_hda_intel
           Card-3 Logitech driver: USB Audio
           Sound: Advanced Linux Sound Architecture v: k4.6.4-1-ARCH
Network:   Card-1: Intel Ethernet Connection I217-LM driver: e1000e
           IF: enp0s25 state: down mac: a0:48:1c:ce:13:66
           Card-2: Intel Wireless 7260 driver: iwlwifi
           IF: wlo1 state: up mac: 0c:8b:fd:6c:72:94
Drives:    HDD Total Size: 1920.4GB (35.7% used) ID-1: /dev/sda model: INTEL_SSDSC2BW18 size: 180.0GB
           ID-2: /dev/sdb model: INTEL_SSDMCEAC24 size: 240.1GB
           ID-3: USB /dev/sdc model: External_USB_3.0 size: 1500.3GB
Partition: ID-1: / size: 69G used: 25G (38%) fs: ext4 dev: /dev/sdb3
Sensors:   System Temperatures: cpu: 54.0C mobo: 50.0C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 216 Uptime: 31 min Memory: 1612.7/7413.6MB Client: Shell (zsh) inxi: 2.3.0

Hydranix

Member

Registered: 2013-02-10

Posts: 55

Re: Laptop charging device is getting hot with fully charged battery

By "laptop charging device" you mean the switched-mode power supply unit, correct?

One of these:

If that's the case, the adapter getting hot isn't exactly a bad thing. They're meant to remove the heat from within the adapter by sinking it into heat sinks which are just behind the plastic casing. Better to have that heat in the adapter's heat sinks than in the battery or in your laptop's heat sinks.

When you won't be using the battery (plugged in constantly) I recommend letting the battery discharge to about 70%, plugging in the laptop, and removing the battery until it is needed. That will maximize the life-time of the lithium ion cells in the battery. Leaving it on the charger constantly will introduce hear into the battery and will prematurely age the cells to the point of being unusable.

If you must keep both battery connected, try to keep the charge between about 50-70%  by unplugging it when it reaches 70% and discharging it no lower than half way.

Last edited by Hydranix (2016-08-02 18:17:16)

Hydranix

Member

Registered: 2013-02-10

Posts: 55

Re: Laptop charging device is getting hot with fully charged battery

By "laptop charging device" you mean the switched-mode power supply unit, correct?

One of these:

If that's the case, the adapter getting hot isn't exactly a bad thing. They're meant to remove the heat from within the adapter by sinking it into heat sinks which are just behind the plastic casing. Better to have that heat in the adapter's heat sinks than in the battery or in your laptop's heat sinks.

When you won't be using the battery (plugged in constantly) I recommend letting the battery discharge to about 70%, plugging in the laptop, and removing the battery until it is needed. That will maximize the life-time of the lithium ion cells in the battery. Leaving it on the charger constantly will introduce heat into the battery and will prematurely age the cells to the point of being unusable.

If you must keep both battery connected, try to keep the charge between about 50-70%  by unplugging it when it reaches 70% and discharging it no lower than half way.

Last edited by Hydranix (2016-08-02 18:30:58)

Schmidi

Member

Registered: 2016-08-01

Posts: 2

Re: Laptop charging device is getting hot with fully charged battery

Yes, I didn't know the exact name. I am not a native speaker!

I know that it is not very good for a lithium ion cell to keep the switch mode supply always plugged in.
The problem is not that the device is getting warmer but it is getting unusual hot. Like I said I never observed this on any other operating system!!!

My question is if this has something to do with Arch power settings or the KDE default power management?

But anyway thanks for your reply!

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: Laptop charging device is getting hot with fully charged battery

Don't post large images, please edit your posts and replace them with links/thumbnails.

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R00KIE
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