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If I put 120 volts through to my MacBook directly over the cable it will invariably damage it. Voltage negotiation doesn't matter here. Also the original comme
by junon 5y ago
If I put 120 volts through to my MacBook directly over the cable it will invariably damage it. Voltage negotiation doesn't matter here.
Also the original comment was unclear; they've edited to clarify. But of course, I'm the bad guy on HN for not being able to read minds.
E: I realize my GP comment was also unclear. I should have said "excessive" voltage, not improper I suppose. "Improper" in my head meant outside the rated voltage for either end/the cable. I'm not the one being a pedant here.
- anamexis 5y agoVoltage negotiation matters, because that what keeps a charger from putting 120 volts into your MacBook. Which is exactly what GP was saying in the very part that you quoted: > chargers and cables are advertised with the wattage they support, but it's really the voltage and current that matters. and what you agreed with in that very same comment: > Also, it arguably does have everything to do with volts