Rockbox mail archiveSubject: Re: Battery usage
Re: Battery usage
From: Uwe Freese <mail_at_uwe-freese.de>
Date: Sun, 13 Oct 2002 01:49:29 +0200
Josh (Norm) Audette wrote on Saturday, October 12, 2002, 1:54:25 PM:
[other batt voltage levels]
JNA> The 4.2V shutoff allows cells to reach a low of around 1.05V per
JNA> cell before shutting off the device. This is well above the 0.8V
I think the 4.5 is a good value and it was tested which value was
best in the past. I think with a lower value, the batteries cannot give
enough power for the voltage regulators.
JNA> What advantages does this offer us? The increase in the FULL value
JNA> gives us a better range for the useful life of the battery. For
JNA> example, we won't see 100% battery for the first three hours of
JNA> operation. Instead, it'd be closer to 1 hour at 100% and then the
JNA> percentage would start changing.
I've just added a patch to the patch tracker on sourceforge that
introduces a voltage "curve" and has a remaining time approximation.
Please read my other mail in the mailinglist, test the patch..
Received on 2002-10-13