Big John wrote:
> I have a RAZR V3 telephone and I note on the charger that the output is
> 5V-550mA. I recently acquired a Garmin Nuvi 350 peronal travel assistant
> (GPS) and note that the charger for it has an output of 5V- 1A. Both
> have a mini USB plug. It would be convenient to use the Garmin charger
> for everything if its safe. Will I damage my telephone by using the 1 A
> charger??
>
> Big John

If the voltage is stable over the load range, I don't see any problem.

OTOH, I have seen power supplies (wall warts) rated at 12VDC that
actually delivered something like 18VDC unloaded. I'm sure it worked
with whatever it was intended to power but I wouldn't plug just any
random gadget into that wall wart!