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Subject: Re: 2300 ma batteries with jukebox recorder?
From: Felix Becker (beckerfelix_at_gmx.de)
Date: 2003-11-13


o.k., thank you, i'll try this when the new batteries arrive.

----- Original Message -----
From: <mr.escape_at_gmx.de>
To: <rockbox_at_cool.haxx.se>
Sent: Thursday, November 13, 2003 9:28 PM
Subject: Re: 2300 ma batteries with jukebox recorder?

> Ok, let me clarify this. I meant internal short-circuit WITHIN the single
> cell, eventually caused by overheating during charging, due to significant
> differences (capacity or percentage of charge) between this and the other
> cells. Three of them got charged and the poor, hot-blooded and prematurely
> full fellow only got cooked! No wonder he is annoyed.
> To avoid this problem (if this is the problem), charge all cells
separately
> with an external charger. When using this pack of cells together, every
> cell receives and delivers the same current. The weakest one (normally by
> some percent) determines the maximum playtime but no overcharging will
> happen. Repeat this from time to time to compensate aging and wear.
>
> mr.escape
>
> At 20:43 13.11.2003, you wrote:
> >I don't think that this was the reason, because the recorder worked well
> >with the old batteries after it went hot.
> >
> >----- Original Message -----
> >From: <mr.escape_at_gmx.de>
> >To: <rockbox_at_cool.haxx.se>
> >Sent: Thursday, November 13, 2003 3:20 PM
> >Subject: Re: 2300 ma batteries with jukebox recorder?
> >
> >
> > > If only one of the batteries was extremely hot, an internal
short-circuit
> > > can be the reason.
> > >
> > > mr.escape
> > >
> > > At 14:53 13.11.2003, you wrote:
> > > >Hello,
> > > >i wanted to run 2300 ma batteries with my jukebox recorder. I
switched
> >the
> > > >battery capacity in the system-menu to 2300 and charged the batteries
> >during
> > > >the night in my jukebox. The next morning the chargingprozess was
> >completed
> > > >and the info menu showed a batterie-life of 15 hours. Everything was
> >o.k.,
> > > >the recorder ran properly, so i turned the unit off. After about 10
> >minutes
> > > >one of the batteries was extremely hot, so that the battery- and
front
> >cover
> > > >of the recorder begun to melt. After replacing the archos-batteries
the
> > > >jukebox was still running, but "the hot one" of the 2300 ma bateries
and
> >the
> > > >batterie-cover were destroyed.
> > > >I don't think this is normal, is it? What coud have been the Problem?
Are
> > > >2300 ma Batteries too "strong"? I ordered new 2300 ma Batteries, but
I'm
> > > >afraid to run them with my new recorder. How high is the risk for
this
> >shit
> > > >to happen again?
> > > >
> > > >Sorry for the bad english, Felix.
> > >
>



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