Re:MacBook Pro 14-inch and MacBook Pro 16-inch
by junon on Monday October 18, 2021 @04:39PM
(#28911400)
They're not interchangeable. USB-C has power negotiation, but that doesn't mean the devices support those voltages. You still need to understand the voltage ratings on both ends of a cable.
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Re:MacBook Pro 14-inch and MacBook Pro 16-inch
by javawizard on Monday October 18, 2021 @05:23PM
(#28911947)
That's exactly what OP is saying - chargers are commonly advertised as being able to supply a particular wattage, but that particular wattage is only attainable if the device being charged supports the maximum voltage the charger is capable of delivering.
OP is complaining that that leaves the true wattage of a given device/charger pair unknowable from the charger's packaging alone without further information as to what voltages and at what currents it can supply on request from the device. It's certainly a valid frustration.
Re:MacBook Pro 14-inch and MacBook Pro 16-inch
by junon on Monday October 18, 2021 @09:51PM
(#28914009)
This makes more sense and isn't how I parsed the original comment.
Re:MacBook Pro 14-inch and MacBook Pro 16-inch
by anamexis on Monday October 18, 2021 @05:08PM
(#28911770)
That is precisely the point of the original comment that you responded to.