What's happening to my battery?
by TheJooomes from LinuxQuestions.org on (#6NCDP)
It used to get a good 2 hours from full to empty, 2.5 if stretched. Recently it cuts power when reaching ~30%. And even more recently it cuts power at ~50%. I've tried running through a few cycles; charging it over night and leaving it running on battery power in the BIOS while I'm at work.
I was making dinner and browsing forums, I think the battery was around 50% when I turned back to the laptop and it was dead. Wouldn't power on, even though the LED indicator on the bottom of the battery indicated 3/5, which should mean ~50-60% state of charge. Here's the upower report right after that incident:
Code: native-path: BAT0
vendor: Samsung SDI
model: DELL MT2648
serial: 1593
power supply: yes
updated: Thu 06 Jun 2024 08:40:06 PM CDT (16 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 23.4876 Wh
energy-empty: 0 Wh
energy-full: 48.84 Wh
energy-full-design: 48.84 Wh
energy-rate: 12.0324 W
voltage: 11.06 V
charge-cycles: N/A
time to full: 2.1 hours
percentage: 48%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-good-charging-symbolic'
History (charge):
1717724406 0.000 unknown
History (rate):
1717724406 0.000 unknownThis seems like quite rapid degradation. But I'm confused because it appears it still has its full factory health of 48.84 Wh, and because it went stone cold dead even though the state of charge LEDs indicated 3/5. If the battery is totally dead, the indicators should normally show 1 blinking LED.
Code:~$ inxi -b
System:
Host: D620 Kernel: 6.1.0-21-amd64 arch: x86_64 bits: 64 Desktop: MATE
v: 1.26.0 Distro: Debian GNU/Linux 12 (bookworm)
Machine:
Type: Portable System: Dell product: Latitude D620 v: N/A
serial: <superuser required>
Mobo: Dell model: N/A serial: <superuser required> BIOS: Dell v: A10
date: 05/16/2008
Battery:
ID-1: BAT0 charge: 48.8 Wh (100.0%) condition: 48.8/48.8 Wh (100.0%)
CPU:
Info: dual core Intel Core2 T7600 [MCP] speed (MHz): avg: 999
min/max: 1000/2333
Graphics:
Device-1: Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics
driver: i915 v: kernel
Display: x11 server: X.Org v: 1.21.1.7 driver: X: loaded: intel
unloaded: fbdev,modesetting,vesa dri: i915 gpu: i915
resolution: 1440x900~60Hz
API: OpenGL v: 2.1 Mesa 22.3.6 renderer: i915 (: 945GM)
Network:
Device-1: Broadcom NetXtreme BCM5752 Gigabit Ethernet PCI Express
driver: tg3
Device-2: Qualcomm Atheros AR9462 Wireless Network Adapter driver: ath9k
Drives:
Local Storage: total: 1.82 TiB used: 212.28 GiB (11.4%)
Info:
Processes: 178 Uptime: 18m Memory: 3.14 GiB used: 1.72 GiB (54.7%)
Shell: Bash inxi: 3.3.26
I was making dinner and browsing forums, I think the battery was around 50% when I turned back to the laptop and it was dead. Wouldn't power on, even though the LED indicator on the bottom of the battery indicated 3/5, which should mean ~50-60% state of charge. Here's the upower report right after that incident:
Code: native-path: BAT0
vendor: Samsung SDI
model: DELL MT2648
serial: 1593
power supply: yes
updated: Thu 06 Jun 2024 08:40:06 PM CDT (16 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 23.4876 Wh
energy-empty: 0 Wh
energy-full: 48.84 Wh
energy-full-design: 48.84 Wh
energy-rate: 12.0324 W
voltage: 11.06 V
charge-cycles: N/A
time to full: 2.1 hours
percentage: 48%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-good-charging-symbolic'
History (charge):
1717724406 0.000 unknown
History (rate):
1717724406 0.000 unknownThis seems like quite rapid degradation. But I'm confused because it appears it still has its full factory health of 48.84 Wh, and because it went stone cold dead even though the state of charge LEDs indicated 3/5. If the battery is totally dead, the indicators should normally show 1 blinking LED.
Code:~$ inxi -b
System:
Host: D620 Kernel: 6.1.0-21-amd64 arch: x86_64 bits: 64 Desktop: MATE
v: 1.26.0 Distro: Debian GNU/Linux 12 (bookworm)
Machine:
Type: Portable System: Dell product: Latitude D620 v: N/A
serial: <superuser required>
Mobo: Dell model: N/A serial: <superuser required> BIOS: Dell v: A10
date: 05/16/2008
Battery:
ID-1: BAT0 charge: 48.8 Wh (100.0%) condition: 48.8/48.8 Wh (100.0%)
CPU:
Info: dual core Intel Core2 T7600 [MCP] speed (MHz): avg: 999
min/max: 1000/2333
Graphics:
Device-1: Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics
driver: i915 v: kernel
Display: x11 server: X.Org v: 1.21.1.7 driver: X: loaded: intel
unloaded: fbdev,modesetting,vesa dri: i915 gpu: i915
resolution: 1440x900~60Hz
API: OpenGL v: 2.1 Mesa 22.3.6 renderer: i915 (: 945GM)
Network:
Device-1: Broadcom NetXtreme BCM5752 Gigabit Ethernet PCI Express
driver: tg3
Device-2: Qualcomm Atheros AR9462 Wireless Network Adapter driver: ath9k
Drives:
Local Storage: total: 1.82 TiB used: 212.28 GiB (11.4%)
Info:
Processes: 178 Uptime: 18m Memory: 3.14 GiB used: 1.72 GiB (54.7%)
Shell: Bash inxi: 3.3.26