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I tried various tutorials to stop charging laptop battery but it is not working on my Lenovo laptop. I tried following commands: 

 sudo apt-get install tp-smapi-dkms  
 sudo modprobe tp_smapi

gives error : 

modprobe: ERROR: could not insert 'tp_smapi': No such device

my system :
Ubuntu 14.04
Lenovo b40-70

leighton
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gunjan parashar
  • 1,347
  • You can refer the url to limit the battery level: http://askubuntu.com/questions/34452/how-can-i-limit-battery-charging-to-80-capacity – BDRSuite Jan 12 '15 at 06:11

1 Answers1

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I think you may be use a guild which write for a Thinkpad. But you should know that tp_smapi is for real Thinkpads only.

Not for all Lenovo. And not even all Thinkpads are supported. See this page on Thinkwiki.org which models are supported. It doesn't mention yours there.

From the same Thinkwiki.org page:

The the new Lenovo series have firmware that is completely different from other ThinkPad models. Neither tp_smapi nor thinkpad-acpi support these models.

These are consumer-grade notebooks, from the original Lenovo line. The supported Thinkpads are more of the original IBM-line of machines with a completely different design in hardware. The component that's key here is the embedded hardware controller for this unique power controlling feature. As far as I know, only the business-line of Thinkpads still feature this today.

Short history: Lenovo bought IBM's Thinkpad line of machines in 2005, but even till today the machines between the Thinkpad T/X/W series can't be compared to the consumer-grade machines in terms of compatibility (and quality).

Bottom line: you can't do this on your device.

Son Hoang
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