So what my laptop should do *automatically* is to stop charging once it hits ~90...

jen729w · on May 5, 2015

See Siracusa's analysis of this suggestion.

http://atp.fm/episodes/33-a-30-minute-skip-button

TL;DR: good idea, but people will forget and become shitty when their laptop isn't at 100% when they go on a trip.

tertius · on May 4, 2015

I have this as "conservation mode" on my Lenovo Yoga Pro 2, and probably all new Lenovos.

misnome · on May 4, 2015

Macbooks have also done this for, like, forever, but more with the top few percent than 10%-60%

gpvos · on May 4, 2015

Yeah, it lets it drop to about 97% before it starts charging again. That doesn't really count, although I guess it's nice.

cmavr8 · on May 6, 2015

Yes this is not real battery care-taking. Ubuntu does it by default like that (I guess linux kernel in general). Although the low and high thresholds (97 and 100% resp.) are adjustable.

silverlake · on May 4, 2015

My Sony VAIO had this 7 years ago.

IE6 · on May 4, 2015

Yeah my thinkpad did this from the same vintage but that was only on Windows. I think quality of battery management on other Operating Systems is varied...

SmellyGeekBoy · on May 5, 2015

My ThinkPad E530 (1 year old) has this, it's part of Lenovo Power Manager. Again, only on Windows (it doesn't charge at all in Ubuntu, which I've never managed to get to the bottom of)

cmavr8 · on May 6, 2015

You're right. Someone should have done it in each OS. In linux it's just a matter of echo-ing a few numbers to the write "files". I just made a script to do it, see my other comments here if interested.