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Rockbox mail archiveSubject: Re: FM Recorder battery levelsRe: FM Recorder battery levels
From: Mike Holden <mike_at_mikeholden.uklinux.net>
Date: Thu, 6 Feb 2003 09:51:46 -0000 (GMT) > >> 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? >> > > Li-Ion batteries scale from a max of 4.2 under charge to the ~3.5 when > flat. This pdf gives you a good overview on the tech > http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_LiIon_O > verview.pdf > > There are either two cells (= 7.2V nominal, but from what I have read I > dont think there are), or the FM has a step up to power the HDD. Informative PDF there - not sure I follow the chemistry etc though! Seems like a nominal 4volts is about right then. It just seemed strange to me that a 5v disk could be powered from a 4v battery. Star Trek technology here we come! Mike Holden Received on 2003-02-06 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |