dolpher, on Jun 26 2008, 10:40, said:
I solved the problem almost the same way.
In activesync i just switched off "allow USB connections" in "connectionsproperties". Then the phone doesn't sync, but it still charges.
Hmm...I think we're all missing the point here.
Windows Mobile devices charge when connected to USB.
They might charge slowly if there isn't alot of current from the port, but the do carge dather than discharge at an increased rate. If syncing causes the device to drain quickly to the point where you have to disallow that synchronisation then there's something wrong.
I called Samsung support in the UK and they indicated that they had i780's that did
charge through USB (albeit sloooowly) and that if the device actually drained through a USB connection then there was a software/device fault and I should get back to my phone supplier (Orange say that they can't be respnsible for USB charging faulty or otherwise - boo)!
Think that if the battery for the device is a 1480mAh and that can run the device for a couple of days (I'm getting 2-3 days of general use between charges and only going to 30-40% battery in between), that would imply that general consumption of power is much less than 500mAh or the battery would be pretty flat pretty quickly under normal use.
It would then follow that when connected to USB that is giving 500mA and the device reports that it is charging it would subsequently allow more processor heavy tasks (like syncing down a USB cable) to take place giving a load on the whole system that is greater than that of normal standby and general use, but do remember that it (thinks it) has an extra 500mA to play with.
However, what I'm seeing is that when you connect the device to USB the battery drains very
quickly. I can only assume that though the device says
that the battery is charging, it isn't and that the procesor is told that it can go into higer power consumption mode and subsequently the battery drains within a few hours. What I'm saying is that there MUST be a fault in the device that means the 500mA from the USB port isn't being used!
Perhaps that the 500mA is enough to trick the OS into thinking it can charge, but the device actually won't charge unless it has the full 700mA that the charger can offer. The i780 does charge quickly when it's using the mains charger implying it can use the full 700mA but can't charge slowly from USB indicating a shortfallin the charging system - a fault on the device!
p.s. sorry for a rambling post, but I knew what I was thinking when I started!