dev builds
themes manual
device status forums
mailing lists
IRC bugs
dev guide

Rockbox mail archive

Subject: RE: Re[3]: battery measurement
From: Olivier BUTLER (
Date: 2002-09-19

The only way to get an accurate value of the remaining time is to monitor
the current during charging and discharging ( in use ) , then calculate the
amount of energy ( kJ ) in the battery. ( Some electric shaver to that ).


-----Message d'origine-----
De : Tjerk Schuringa []
Envoye : jeudi 19 septembre 2002 07:51
A :
Objet : Re[3]: battery measurement

--- Uwe Freese <> wrote:

> The battery status (percentage) is only calculated by the voltage of
> the battery. So if it jumps up and down, the voltage of your battery
> jumped up and down.

Maybe it would be a better idea to just give the raw voltage of the battery.
The percentage does not give a good indication of the actual time left as
is dependent on so many factors. I used to have a cellfone (ahem, Sagem)
would give the actual voltage, and that was great. I now have a Motorola and
says "40%" for days and then all of a sudden it conks out on me "LoBatt".


Do you Yahoo!?
New DSL Internet Access from SBC & Yahoo!

This email has been scanned for all viruses by the MessageLabs SkyScan
service. For more information on a proactive anti-virus service working
around the clock, around the globe, visit

Page was last modified "Jan 10 2012" The Rockbox Crew