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Old 09-11-2005, 06:59 PM   #1 (permalink)
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Join Date: May 2005
Location: West Midlands, UK
Model: 7100v
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Default charger circuit-OEM vs 3rd party

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Has anyone opened up their RIM car or wall charger to see what the difference is between the OEM version and the 3rd party products? Both provide the 5v on the power rails, but the OEM units seem to also use the data pins to tell the phone that a genuine charger is attached. How is this achieved?

I want to use a 3rd party usb charger unit (that takes 4AA (pencell) batteries) to charge my 7100, but the charging icon on the 7100 disappears a few seconds after plugging in. I would like to know how to trick the 7100 into thinking it has a genuine charger attached.

I am aware BTW that I risk potentially frying the 7100.