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Subject: Re: FM Recorder battery levels
From: Maik Bühnemann (M.a.i.k_at_gmx.de)
Date: 2003-02-06


Hi!
I have found a harddisk mp3-player test in the german computer magazine c't
(26/2002)
and ist says about the battery type in the fm-recorder:
Li-Ion 4,2V - 2200mA - changeable (the same as in the multimedia modell)

----- Original Message -----
From: "Mike Holden" <rockbox_at_mikeholden.uklinux.net>
To: <rockbox_at_cool.haxx.se>
Sent: Thursday, February 06, 2003 10:00 AM
Subject: FM Recorder battery levels

> As I mentioned in another post, I believe the basic battery levels on the
> FM Recorder model are being read wrong. The current values show a scale
> from 4 volts downwards, but surely, despite the new battery type, it is
> still 4 x 1.5 volt batteries, for a maximum of 6 volts? The harddrive
> still needs 5V, yes?
>
> This being the case, then the scaling factor must have changed from the
> previous models. The value read from the hardware is divided by a scaling
> factor to give an integer representation of the voltage. To correct this
> scaling factor, we need to multiply the current factor by 2/3, giving a
> new value of 4310 (based on 6465 as the current factior, from memory, so
> it may be wrong!). The battery min and max values will also have to be
> recalculated (4v and 2.65v rescaled to 6v and 4v?)
>
> I will have a look at this tonight when I get home, but does the theory
> sound reasonable to this list?
>
> Mike Holden
>
>



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