Thanks, for starters this is really useful, because it's not at all similar to what I've been observed. The computer powers off with battery levels between 10-15% and the led starts blinking around 5-10%. I'm using several batteries on the same XO 1.0 computer. Granted, the batteries are not fresh ones, but that's exactly what I am trying to figure out. How the battery behaviour changes when battery capacity starts to decrease over time. Any additional information will be most welcome.
Ismael 2011/3/24 Paul Fox <p...@laptop.org> > ismael wrote: > > Hello everyone, I'm trying to perform some tests on XO battery life > > performance and I have some questions which I couldn't find a clear > answer > > in the wiki or this list: > > i'm sure richard will chime in, but here's a start. > > > > > - When the battery level is "critically low" the OS (Sugar 0.88 based > > Dextrose) performs a safe shutdown. I would like to know what is the > exact > > condition that triggers this. > > the answer to this depends on what version of powerd is running. in > the latest powerd versions, we force a shutdown if the capacity is 1% > (or less :-), or if the battery voltage is 5.7V or less. we don't > bother with these checks unless the capacity is below 40% (which may > be a pointless optimization). these checks were slightly different > in powerd versions 27 and earlier, but i suspect dextrose is running > something newer than that. > > > - Likewise, at some level controlled by the XO EC, the battery led light > > begins to flash orange/red. I would also like to know which is the exact > > condition that triggers this. Is it the SOC, battery voltage, ACR... ? > And > > i believe this value is 5.7V. (i.e., battery voltage) > > > what level triggers this condition? I would also like to know the level > in > > which the XO performs a "hard" poweroff. > > 5.5V on XO-1.5, 5.4V on XO-1. > > also remember that the voltage at the battery will change, substantially, > between the suspended and running states -- so what the EC sees during > suspend may be several tenths of a volt higher during suspend than when > the system is running. > > paul > > > > > Any help is appreciated. > > > > Thanks! > > > > Regards, > > Ismael > > > > -- > > Ismael Schinca > > Centro Ceibal - Depto. Técnico - I+D > > Avda. Italia 6201 - Edificio Los Ceibos > > Montevideo - Uruguay. > > Tel.: 2601 57 73 Int. 2232 > > part 2 text/plain 129 > > _______________________________________________ > > Devel mailing list > > Devel@lists.laptop.org > > http://lists.laptop.org/listinfo/devel > > =--------------------- > paul fox, p...@laptop.org > -- Ismael Schinca Centro Ceibal - Depto. Técnico - I+D Avda. Italia 6201 - Edificio Los Ceibos Montevideo - Uruguay. Tel.: 2601 57 73 Int. 2232
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