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Subject: Re: Charging problem in v. 2.0 for Archos Jukebox Recorder 20
From: Mike Holden (rockbox_at_mikeholden.uklinux.net)
Date: 2003-05-02


spidermagnet said:
> Tim,
>
> I hypothesize that you may not be charging it up fully?
>
> I have an FM Recorder, and when charging with Rockbox, the battery
> display hits 100% _long_ before the battery actually fully is charged.
> At first I thought the battery was draining quickly, then realized that
> I was not charging it fully. Does the battery seem to charge much more
> quickly with Rockbox than the archos OS?

Rockbox does not control charging on FM - it is done by hardware. We
simply report the charge that the hardware says it has. Charging rate
should be the same for Rockbox as woth Archos firmware. The problem is
that Rockbox displays the battery level which fools you!

>
> My method is charge up for a while after it hits 100%, then reboot
> without the charger. The battery charge figure after reboot will give me
> an idea of the real charge, and then I plug the charger back in and
> repeat until it displays a charge I'm satsified with after reboot
> (>95%).
>

This kind of behaviour is what I see as well. I just plug it in and leave
it overnight, and that seems to fill it fine!

>
> There is a mailing list thread about fixing the display to tell you when
> it really stops charging. I haven't a compile environment for it at
> present to use it myself, but perhaps it will be in a daily snapshot
> soon?

The patch is still in the discussion and development phase at the moment,
and we have had lots of discussion about how it should behave. Part of the
patch is to add some charging features onto the FM that are not there yet
(like displaying the fact that the unit is still charging). Once I finish
writing it and get some more testing done by members of this list (I can
also post full firmwares for those unable to compile their own) it should
hopefully go into the official version, and from then on it will be a part
of the daily builds on the Rockbox site.

-- 
Mike Holden



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