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[–] 1 point 1 year ago (3 children)

Partial discharge? Is it something active about usb that lets the thing being charged dictate the power? Like they're in digital communication via usb? Or just physics?

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  • [–] 9 points 1 year ago (2 children)

    Power delivery. If both the charger and device implement it according to the spec they indeed negotiate the voltage and amperage they will deliver. However not all chargers (properly) implement the spec

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  • [–] 2 points 1 year ago (1 child)

    So is it generally more expensive brand name ones do stick to the spec, or not as simple as that? I've been often using my 65W laptop supply to charge my phone, earbuds, whatever. But it's not OEM, so now I'm wondering...

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