Chris Ball and Paul Fox responded: > > I take this to mean that *something* was draining some power for > > the two days the XO was sitting in its "shut down" state. > > The embedded controller was. Something needs to be watching for a power > button press in order to know when to turn on.
Thank you. I guess it's simpler to do it that way, than to add two extra "latches" to the package. [2 latches might work as follows: One latch would be turned on when sent electricity through the power button. This first latch would turn on the second latch if that second latch was off. The software could test the first latch state, and could turn that state off when it wanted to be watching for a power button press. The second latch would connect the battery to the motherboard proper. It would be turned off by the software for "zero power drain" mode.] Benjamin Schwartz wrote: > All rechargeable batteries lose stored energy over time. > This phenomenon is called "self-discharge". True. I have found the XO-1 batteries (mfg by BYD Company Ltd) to be very stingy with energy loss. When I put one back in after a month out of the case, the XO software told me it was still 94% charged. James Cameron mentioned measuring a current draw of 24mA. I suspect this was *not* on a thoroughly "shut-down" G1G1. In my experience, after two days in a "shut-down" state the XO software shows the battery charge % to be somewhere in the mid-90's. James wrote: > 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. Thanks, mikus _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
