News for hackers. Stuff that matters.

A comment on Ask HN: Should I unplug my laptop charger at 100%?. Parent comment

Re:Ask HN: Should I unplug my laptop charger at 100%? by gpvos on Monday May 04, 2015 @03:27PM (#9488455)
So what my laptop should do automatically is to stop charging once it hits ~90%, and start charging again when it hits ~40%. And the OS should give me an easy-to-reach option to "charge to 100%" for when I'm about to make a trip. Why hasn't anyone implemented this yet?
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by jen729w on Tuesday May 05, 2015 @01:23AM (#9490985)
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.

[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by tertius on Monday May 04, 2015 @04:18PM (#9488865)
I have this as "conservation mode" on my Lenovo Yoga Pro 2, and probably all new Lenovos.
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by misnome on Monday May 04, 2015 @04:43PM (#9489048)
Macbooks have also done this for, like, forever, but more with the top few percent than 10%-60%
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by gpvos on Monday May 04, 2015 @05:29PM (#9489339)
Yeah, it lets it drop to about 97% before it starts charging again. That doesn't really count, although I guess it's nice.
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by cmavr8 on Wednesday May 06, 2015 @03:42PM (#9501306)
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.
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by silverlake on Monday May 04, 2015 @03:47PM (#9488594)
My Sony VAIO had this 7 years ago.
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by IE6 on Monday May 04, 2015 @04:20PM (#9488887)
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...
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by SmellyGeekBoy on Tuesday May 05, 2015 @04:49AM (#9491484)
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)
[ Parent | on HN ]
Re:Ask HN: Should I unplug my laptop charger at 100%? by cmavr8 on Wednesday May 06, 2015 @10:26AM (#9498828)
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.
[ Parent | on HN ]