Battery charge limiting

Lars Engels lars.engels at
Fri Oct 21 13:03:03 UTC 2011

On Thu, Oct 20, 2011 at 04:44:24PM +0400, Dmitry Kolosov wrote:
> > for thinkpads, there is no need to reverse any win32 stuff.. there is a
> > linux driver that accesses the EC and is able to get/set battery
> > parameters (among other stuff, like HDAPS) called tp_smapi
> > (
> Ok. It looks like not every EC capable to be controlled, there is some kind of 
> active and passive ECs. How we can guess the one IS capable? May be presence 
> of some ACPI methods is the symptom of such capabilities? Any suggestions?

If anyone likes to port tpctl, there's already a version of the Active
Protection System hdaps: That
results in a 404, but I've uploaded a copy of it to
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