3 ms·

Voltage is standardized

• deleted 6y ago
  [deleted]
• nailer 6y ago
  I know with regular USB C (not USB C to lightning), it's definitely not standardized - some chargers output 5V, some 20V, some 45V. Are you saying lightning changes this?
  • JustResign 6y ago
    USB PD involves negotiation -- the charger doesn't just "push" 20V to a device that isn't asking for it.
    • nailer 6y ago
      Exactly. So: non-tech aware customer has a 5v USB 3 charger, buys an iPhone 12, and wonder why it charges 10x slower than their friend's new phone.