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But imagine the size of that power brick.

I believe 240W charging uses 50V@±5A.

Looking at a 240W power adapter (https://www.slimq.uk/products/240w-charger-1) the whole thing doesn't seem that much bigger than a regular old laptop charger. Modern GaN chargers are quite compact for the punch they pack.

They don't make it clear but it seems like that only supports 240 watt over the barrel plug.

If such a high charging power level is needed anyway, does requiring USB-C charging make the power brick any larger?

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