Rockbox mail archiveSubject: RE: Battery issues (CONFIRMED!!!)
RE: Battery issues (CONFIRMED!!!)
From: Mark Bright <mark.bright_at_btopenworld.com>
Date: Wed, 3 Mar 2004 19:12:17 -0000
I know the sampling rate of the MP3 has an effect on the battery life (320
kbps will kill the battery faster than 128 kbps). Is this used in the
estimated battery life calculation?
For example, 100% battery life on my fmr gives an estimated time of 15
hours, is this based on 128 kbps MP3's? If so, would it be possible to
configure "Typical MP3 rate", in the same way that we can configure battery
size. I only have 160 to 192 MP3's on my Archos, but other people may
consider 192 to be a minimum and prefer higher, many others will consider
anything over 128 a waste, and someone who has lots of audio books may
consider 64 to 96 more than adequate...
BTW, with a 160 kbps MP3 of 3 minutes set to "Repeat one", I got a battery
life of 11.5 hours ( a little short of the initial 15 hour estimate, but
certainly good enough)
|[mailto:rockbox-bounces_at_cool.haxx.se] On Behalf Of Linus
|Sent: 02 March 2004 23:05
|To: Lucas; Rockbox development
|Subject: Re: Battery issues (CONFIRMED!!!)
|> Thanks for this response. It's very helpful in terms of
|> the funky battery readings I've been getting with rockbox.
|Maybe I can
|> regain my sanity now...
|As for the battery readings, the percentage you see in the
|battery display is a calculated estimate of the remaining run
|time, based on the discharge curve of a typical NiMH battery.
|Naturally, different batteries have different curves, so this
|estimate may very well be totally wrong.
Received on 2004-03-03