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Subject: Re: Battery problems
From: Andrew Jamieson (andrew.jamieson_at_projectlab.net)
Date: 2002-10-25


Without any further info, it sounds like your batteries are getting old. As
NiMh's get old, their internal impedance increases (this is a side effect of
the so called 'memory effect'), which means that the voltage across the
batteries themselves can drop considerably when large currents are drawn
from them. This means that a low load battery voltage reading shows them to
have good charge (ie when the Archos HD is powered down), but when the
current draw increases (ie the HD spins up and draws ~0.9 A!) the voltage
drops below the value needed to power the unit, and the unit shuts off, or
stops playing. I get this alot on my 1.5 year old batteries. I would
recommend trying new batteries. It may be only one of the batteries is
stuffed, but unfortunately mixing new and old is a very bad idea for many
very good reasons. Dont do it.

Andrew Jamieson

----- Original Message -----
From: "Curtis Stanford" <curtis_at_petrobidding.com>
To: <rockbox_at_cool.haxx.se>
Sent: Friday, October 25, 2002 2:23 PM
Subject: Battery problems

> Hello all, I've been using rockbox on my AJB6000 (yes, I know it's old)
for a
> while now and have noticed a problem with my battery life. On fully
charged
> batteries, playing a playlist, it only lasts somewhere between 45 and 60
> minutes. The odd thing is that the battery meter shows two bars (out of
> three) when it stops playing. I'm using the spare set of batteries that
came
> with my Archos and rockbox 1.4.
>
> Any clues on this anyone?
>
> Thanks
>
> Curtis
>



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