I have bought a larger battery for my hx2110 with WM5 and want to calibrate it. This seems necessary, because the batteryindicator on the first page will not show the green symbol even when the percentage has reached 100% for some hours.
Some research showed me that I have to discharge the battery so much, that the device will not even restart after a push on the reset button. Said, done - I turned all power management off, and this morning, the PDA was off and truly dead.
I got a notification "start calibration" on the next boot when I applied power to the device, and hit "OK". The windows minimizes to a symbol in the upper bar and will stay there. Everytime I tap it, see the same question: "Start the calibration - OK/NO".
Is the calibration already running in the background, and the message only there to give me access to the "NO"-button to stop the calibration prematurely?
I have added the screenshots as a PNG-file. Unfortunately, my PDA is a german version, but the symbol is international and the text is not that much different from it's english translation ;)
Regards,
Detlev
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Probably yes - I remember seeing the message once before, and I had to reset my PDA, and the calibration did not seem to work.
Actually, a recalibration "after the next boot" would not make sense, as a recalibration requires a complete cycle of the battery, and the battery was "now" empty (when the message popped up), and the battery will not be empty when I perform the next soft-reset.
I will let it sit for a few hours (my next task is jogging, and I prefer a more sturdy MP3-player for this ;)
After all, it's saturday evening, and there's something else to do apart from watching my PDA :-)
I am sure you already know this, but my reading of the literature on this is that when you let the battery die to the point of no longer powering the PDA, there is still some juice in it (between 2.5 and 3.0 volts per cell) even though the PDA registers it as 0% power. The battery circuitry shuts off the battery to prevent it from over discharging. The battery, itself, does not need to be calibrated since it has no memory. The purpose of calibration is to reset the digital sensing unit in the PDA - so your battery guage will function correctly.
I think the calibration, itself, is pretty quick. Perhaps a soft or even clean reset done immediately after you see the message (while the PDA is plugged into AC power), then allowing the PDA to fully charge will complete the calibration?
"When the charge indicator goes off, your Pocket PC will automatically calibrate the battery. If you want to unplug the AC adapter, wait at least 5 seconds. This length of time is necessary for the battery calibration to complete and thus ensure the best performance of the battery."
So I think you need to let your battery completely charge. When the amber light is constant. Reset your PDA and the calibration will complete. Again, the battery is not what needs to be calibrated, it is the sensor in the PDA, so it makes sense to me do this after the battery is fully charged.
the calibration is unfortunately not as simple as gauging one-time.
Calibrating the battery is both a device- as well as a battery-task.
The charging controller in the device needs to know the maximum and minimum power that the battery will deliver - as these need to be considered as 0 and 100%. Both values are not constants - they depend on the batterys controller circuit and the condition of the cells in the battery.
Meanwhile, the battery itself does consist of several cells (or one large polymer cell) with its own charging controller (in Li-Io, everything double-safety because the technology is explosive). The battery's controller needs to measure the capacity, current and temperature of the included cells seperately, as it needs to their balance their current state in order to prevent depletion or overloading of the individual cells. Depleting a cell reduces (damages) its capacity permanently. Overloading a cell damages it's capacity as well, but can also result in fire or even explosion. Therefore, the calibration is a long act which will typically last double the time of a normal charging process.
I also have an hx2110 and a new 1500mah battery. I've tried every way of calibrating that I've read of, here, another forums, the official advice from HP, but nothing. I've never seen the calibrating promp in my life.
Recently, I upgraded to WM5, but nothing changed. In fact, the xscale driver with video apps was buggy, showing interferences on the image. So I downgraded again to WM2003SE.
Looking thorough folders on 2003SE, I found an app, SWB.exe and his shortcut in the Windows folder. After I've charged again (to the point of no blinking) my new battery, I've started the app, but only shows on the title bar "Default Ime" and stays that way. Also shows on the right corner the "X" for closing the app (Really closes, not minimizes). By now I have this app running, but no news. If something comes up, I'll tell you. But by now, Does somebody know if this is really the app that controls calibration? The icon itself it's the same shown in the title bar on the PNG attachment on the first post (Detlev), that little battery.
Anyone knows? Some "command line switches" we would need to "force" calibration with the app?
Printable version
;)