> Faster charging can be explained by turning the device under charge off s=
o
> no current from the charger is going to be used ( "wasted" ) for device a=
ctive
> mode consumption but all the current will go into device battery instead.
>=20
> I think there are no smoke and mirrors but simply bells and whistles in t=
hat
> cable :) One with regular cable and good charger can simply turn the devi=
ce
> off and charge it faster that way compared to charging it while device is
> actively working.

I suspect the switch changes the resistors on the data lines that Apple use=
 to determine the maximum current that can be drawn from the charger. It ma=
y also disconnect the data lines from pass through to the charger resistor =
mode.

Someone here was asking about USB charger specs a little while back, and so=
mewhere in the discussion was a link to an item where the resistor values r=
equired for an Apple idevice  had been discussed.

--=20
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