Battery charge limiting

[Dmitry Kolosov]

> I've never heard of such a theory as limiting charge to prolong battery
> life, not with Lithium Ion batteries anyway; nor have I ever seen any
> such as a BIOS option.  'Common' on which brand/s of notebooks?
> 
> Can you provide any links to articles discussing this?

http://hintsforums.macworld.com/archive/index.php/t-104440.html
http://askubuntu.com/questions/34452/how-can-i-limit-charging-capacity-to-
extend-a-batterys-lifespan

Lenovo provides such programs with their new products. A program can hold a 
battery at 70-80%% while it not used.
 
> I don't think control over a notebook's charging is possible in FreeBSD;
> this is usually managed by an Embedded Controller and ACPI merely passes
> on the the states reported by that and by the battery itself.

May be modern EC provides some controlling methods or so?