Re: [PATCH v7 1/4] gadget: Introduce the usb charger framework

From: Pavel Machek
Date: Mon Apr 18 2016 - 08:59:01 EST


On Mon 2016-04-18 14:42:58, Felipe Balbi wrote:
>
> Hi,
>
> Pavel Machek <pavel@xxxxxx> writes:
> > On Mon 2016-04-18 13:55:17, Felipe Balbi wrote:
> >>
> >> Hi,
> >>
> >> Felipe Balbi <balbi@xxxxxxxxxx> writes:
> >> >> But cellphone user knows what he connected his charger to, and that's
> >> >> why it is useful to be able to lower the current. Even when you said
> >> >> "less is just stupid" I demonstrated it is not, at least in case when
> >>
> >> and btw, you haven't demonstrated anything. You merely stated that it
> >> isn't without references or numbers, or any source of trustworthy
> >> information. I'm not really into 'believing'.
> >
> > You are not really into reading, either, it seems. Or into the
> > electronics. Or into physics.
> >
> > You seem to understand that charging li-ion from li-ion produces too
> > much heat. (And yes, it does, DC-DC convertors are not 100%
> > effective). Converting energy into heat is not a good idea.
> >
> > If you need numbers or references to understand basic physics, you'll
> > need to google it yourself, I'm afraid.
>
> still doesn't change the fact that you haven't demonstrated anything. If
> you can't be helpful and/or constructive, you may also go away and use
> whatever unsafe setup you want to use.

So you still claim that it is "stupid" to charge at anything lower
than maximum allowed current?

Even after I described the example with device running off power bank
on a train? Would you explain your reasoning?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html