Long ago I did some early measurements of the EC and it was consuming current while operating.
The operating current has varied slightly according to the firmware version. There have been improvements, but I've not measured it recently. The symptom you describe is quite normal ... the battery has discharged, and the state of charge evaluated by the EC shows that charging would be of benefit. So it goes yellow. If you wish to avoid this draining by the EC, and instead rely only on draining by self-discharge of the battery pack, then remove the pack from the XO. Self-discharge rate has a dependency on storage temperature as well. If you wish to measure the EC current, a simple way to do it is to remove the battery pack, and place a current measuring device in series with the DC cable to the XO. This gives you a maximum. The actual current is smaller, because the DC socket path to the EC has more losses than the DC battery path. I did this just now, on a unit running Q2E27, and another running Q2E30, the current is 24mA at 12.9V powered from a large sealed lead acid battery with nothing else attached. Two days of this would be 1.15 amp hours (Ah). Three days would be 1.73 Ah. Assuming 3.1 Ah OLPC CL1 Li-Fe battery, two days should be enough to bring the state of charge down to about 63%, certainly time for a charge. -- James Cameron mailto:qu...@us.netrek.org http://quozl.netrek.org/ _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel