My Blackberry 9530 Storm ( which is the worst cell phone I have ever  
owned ) will charge it's battery via the USB port when I use a  
Kensington power adapter which has a USB port.  The BB will also  
charge with it's supplied USB charger.

I built my own USB power adapter which supplies  5V to the correct  
pins.  The Blackberry does not charge.  The only difference I can  
imagine is that the data + and - lines make some difference.  My  
adapter leaves these lines unconnected.  I don't know what the  
Kensington does.  I have measured the 5V and it looks okay when loaded.

Any ideas ?

Gus
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