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Subject: Re: 2300 ma batteries with jukebox recorder?
From: mr.escape_at_gmx.de
Date: 2003-11-13


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.
> >



Page was last modified "Jan 10 2012" The Rockbox Crew
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