Magellan GPS - Re: A portable GPS should use standard mini-USB power (but which

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Re: A portable GPS should use standard mini-USB power (but which

Des O'Donoghue

2007-05-29, 3:33 pm

Mr Physics wrote:

> It would be an error to assume that all 'USB' chargers or power sources
> are the same. The charger for my Motorola Razr will not charge either my
> wife's Blackberry or my GPSMap60cx. 5V power and a common connector do
> not a standard make, unfortunately. As far as I can tell, the best that
> can be said about this is that mixing and matching chargers will
> probably not harm charger or device. I seem to remember reading that
> this is a result of certain pins other than +5V and GND on the USB link
> being held, high, low, or left to float to tell the device that it
> should be in charge mode. Sometimes engineers are too smart for our own
> good.
> Greg

Funny that. When we had a Razr it would charge the blackberry no problem
but the blackberry charger and the car chargers wouldn't charge the Razr.

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