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Hardinfo Extract | Battery

-Battery: BAT0- State : charging (load: 186 mA) Capacity : 610 mAh / 5600 mAh (10.89%) Battery Technology : rechargeable (LION) Model Number : 42T4837 Serial Number : 32589

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After installing TLP, the battery backup almost doubled to 46 minutes. (Still lower than the windows comparable of 3-4 hours). After 10 minutes though, the status says 22 minutes - i.e. draining faster than it says. Here's the tlp-stat output (while on battery backup)

TLP Output - sudo tlp-stat -s -b --- TLP 0.8 --------------------------------------------

+++ System Info System = LENOVO ThinkPad X201 3626MQ9

BIOS = 6QET61WW (1.31 )

Release = Ubuntu 14.04.3 LTS

Kernel = 3.13.0-67-generic #110-Ubuntu SMP Fri Oct 23 13:24:41 UTC 2015 x86_64

/proc/cmdline = BOOT_IMAGE=/boot/vmlinuz-3.13.0-67-generic root=UUID=c2854d68-9d9b-4fed-beaf-4bb9369aa5ba ro quiet splash vt.handoff=7

Init system = upstart

+++ System Status TLP power save = enabled

power source = battery

+++ ThinkPad Extended Battery Functions

tp-smapi = active

tpacpi-bat = inactive (unsupported hardware)

+++ ThinkPad Battery Status: BAT0 (Main / Internal)

/sys/devices/platform/smapi/BAT0/manufacturer = LGC

/sys/devices/platform/smapi/BAT0/model = 42T4837

/sys/devices/platform/smapi/BAT0/manufacture_date = 2010-12-02

/sys/devices/platform/smapi/BAT0/first_use_date = 2011-08-27

/sys/devices/platform/smapi/BAT0/cycle_count = 110

/sys/devices/platform/smapi/BAT0/design_capacity = 62160 [mWh]

/sys/devices/platform/smapi/BAT0/last_full_capacity = 6820 [mWh]

/sys/devices/platform/smapi/BAT0/remaining_capacity = 6590 [mWh]

/sys/devices/platform/smapi/BAT0/remaining_percent = 97 [%]

/sys/devices/platform/smapi/BAT0/remaining_running_time_now = 46 [min]

/sys/devices/platform/smapi/BAT0/remaining_charging_time = not_charging [min]

/sys/devices/platform/smapi/BAT0/power_now = -8529 [mW]

/sys/devices/platform/smapi/BAT0/power_avg = -9709 [mW]

/sys/devices/platform/smapi/BAT0/state = discharging

/sys/devices/platform/smapi/BAT0/start_charge_thresh = 96 [%]

/sys/devices/platform/smapi/BAT0/stop_charge_thresh = 100 [%]

/sys/devices/platform/smapi/BAT0/force_discharge = 0

  • You need a new Battery its that simple there is nothing you can do on any operating system that will fix a broken battery. this is an off topic question – Neil Nov 6 '15 at 5:41
  • Thanks Neil. The laptop worked fine before the migration from Windows. Windows provided a power back up of 3-4 hours. – Abhijeet Deshpande Nov 6 '15 at 7:23
  • Install TLP and show the output of tlp-stat -s -b(edit your post) – linrunner Nov 6 '15 at 18:49
  • My X220 with original battery still gives me 6 hours of battery. Have you checked your CPU use with system monitor? – Arup Roy Chowdhury Nov 7 '15 at 5:14
  • The battery is old and its full charge threshold shows its time to replace, the X201 is older than my 220 and will need a battery change. – Arup Roy Chowdhury Nov 7 '15 at 5:15
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Your battery is 5 years old and worn down to 10% capacity:

design_capacity    = 62160 [mWh]
last_full_capacity =  6820 [mWh]

This battery won't run 3-4 hours with Windows. Definitely.

You may try to recalibrate but i doubt this will help much.

I suggest to replace the battery.

  • Thanks linrunner, Arup and Neil. Will try a new battery and post an update here either way. Cheers – Abhijeet Deshpande Nov 9 '15 at 4:21
  • Update: New battery provides a decent backup of 3-4 hours. Thanks guys! – Abhijeet Deshpande Jul 13 '16 at 4:22

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